Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Dec. 31, 2019	Feb. 07, 2020	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	NOV
Entity Registrant Name	NATIONAL OILWELL VARCO INC
Entity Central Index Key	0001021860
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		385,946,844
Entity Public Float			$ 7.6
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, par value $.01 per share
Security Exchange Name	NYSE
Entity File Number	1-12317
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0475815
Entity Address, Address Line One	7909 Parkwood Circle Drive
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77036-6565
City Area Code	713
Local Phone Number	346-7500
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference [Text Block]	Portions of the Proxy Statement in connection with the 2019 Annual Meeting of Stockholders are incorporated in Part III of this report.

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 1,171	$ 1,427
Receivables, net	1,855	2,101
Inventories, net	2,197	2,986
Contract assets	643	565
Prepaid and other current assets	247	200
Total current assets	6,113	7,279
Property, plant and equipment, net	2,354	2,797
Lease right-of-use assets, operating	444
Lease right-of-use assets, financing	230
Deferred income taxes		11
Goodwill	2,807	6,264
Intangibles, net	852	3,020
Investment in unconsolidated affiliates	282	301
Other assets	67	124
Total assets	13,149	19,796
Current liabilities:
Accounts payable	715	722
Accrued liabilities	949	1,088
Contract liabilities	427	458
Current portion of lease liabilities	114	7
Accrued income taxes	42	66
Total current liabilities	2,247	2,341
Long-term debt	1,989	2,482
Lease liabilities	674	222
Deferred income taxes	140	564
Other liabilities	253	298
Total liabilities	5,303	5,907
Commitments and contingencies
Stockholders’ equity:
Common stock - par value $.01; 1 billion shares authorized; 385,886,682 and 383,426,654 shares issued and outstanding at December 31, 2019 and December 31, 2018	4	4
Additional paid-in capital	8,507	8,390
Accumulated other comprehensive loss	(1,423)	(1,437)
Retained earnings	690	6,862
Total Company stockholders' equity	7,778	13,819
Noncontrolling interests	68	70
Total stockholders’ equity	7,846	13,889
Total liabilities and stockholders’ equity	$ 13,149	$ 19,796

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	385,886,682	383,426,654
Common stock, shares outstanding	385,886,682	383,426,654

Consolidated Statements of Income (Loss) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue
Revenue	$ 8,479	$ 8,453	$ 7,304
Cost of revenue
Cost of revenue	7,634	7,009	6,412
Gross profit (loss)	845	1,444	892
Selling, general and administrative	1,303	1,233	1,169
Goodwill and indefinite-lived intangible asset impairment	3,612
Long-lived asset impairment	2,209
Operating profit (loss)	(6,279)	211	(277)
Interest and financial costs	(100)	(93)	(102)
Interest income	20	25	25
Equity loss in unconsolidated affiliates	(13)	(3)	(5)
Other income (expense), net	(90)	(99)	(33)
Income (loss) before income taxes	(6,462)	41	(392)
Provision (benefit) for income taxes	(369)	63	(156)
Net loss	(6,093)	(22)	(236)
Net income (loss) attributable to noncontrolling interests	2	9	1
Net loss attributable to Company	$ (6,095)	$ (31)	$ (237)
Net loss attributable to Company per share:
Basic	$ (15.96)	$ (0.08)	$ (0.63)
Diluted	(15.96)	(0.08)	(0.63)
Cash dividends per share	$ 0.20	$ 0.20	$ 0.20
Weighted average shares outstanding:
Basic	382	378	377
Diluted	382	378	377
Sales [Member]
Revenue
Revenue	$ 5,862	$ 5,699	$ 4,948
Cost of revenue
Cost of revenue	5,696	4,883	4,499
Service [Member]
Revenue
Revenue	1,517	1,612	1,472
Cost of revenue
Cost of revenue	1,188	1,257	1,127
Rental [Member]
Revenue
Revenue	1,100	1,142	884
Cost of revenue
Cost of revenue	$ 750	$ 869	$ 786

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (6,093)	$ (22)	$ (236)
Other comprehensive income (loss):
Currency translation adjustments	(7)	(292)	272
Derivative financial instruments, net of tax	10	(21)	46
Change in defined benefit plans, net of tax	11	(14)	24
Comprehensive income (loss)	(6,079)	(349)	106
Net income (loss) attributable to noncontrolling interests	2	9	1
Comprehensive income (loss) attributable to Company	$ (6,081)	$ (358)	$ 105

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

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+ Details

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net loss	$ (6,093)	$ (22)	$ (236)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	533	690	698
Deferred income taxes	(426)	(63)	(341)
Stock-based compensation	130	110	124
Loss on extinguishment of debt	26
Equity (income) loss in unconsolidated affiliates	13	3	5
Goodwill and indefinite-lived intangible asset impairment	3,612
Long-lived asset impairment	2,209
Provision for inventory losses	659	49	114
Other, net	16	(7)	20
Change in operating assets and liabilities, net of acquisitions:
Receivables	275	(72)	72
Inventories	104	(7)	229
Contract assets	(70)	(68)	170
Prepaid and other current assets	(45)	67	130
Accounts payable	(19)	196	86
Accrued liabilities	(194)	(186)	(130)
Contract liabilities	(34)	(62)	(160)
Income taxes payable	(25)	(15)	(44)
Other assets/liabilities, net	43	(92)	95
Net cash provided by operating activities	714	521	832
Cash flows from investing activities:
Purchases of property, plant and equipment	(233)	(244)	(192)
Business acquisitions, net of cash acquired	(180)	(280)	(86)
Other, net	98	67	33
Net cash used in investing activities	(315)	(457)	(245)
Cash flows from financing activities:
Borrowings against lines of credit and other debt	511
Payments against lines of credit and other debt	(1,000)		(500)
Financing leases	(32)	(8)	(6)
Cash dividends paid	(77)	(76)	(76)
Debt issuance and extinguishment costs	(36)
Other	(13)	54	(13)
Net cash used in financing activities	(647)	(30)	(595)
Effect of exchange rates on cash	(8)	(44)	37
Increase (decrease) in cash and cash equivalents	(256)	(10)	29
Cash and cash equivalents, beginning of period	1,427	1,437	1,408
Cash and cash equivalents, end of period	1,171	1,427	1,437
Cash payments during the period for:
Interest	85	90	97
Income taxes	$ 144	$ 64	$ 50

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Stock-Based Compensation on Tender Offer [Member]	Common Stock [Member]	Additional Paid in Capital [Member]	Additional Paid in Capital [Member] Stock-Based Compensation on Tender Offer [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings (Loss) [Member]	Total Company Stockholders' Equity [Member]	Total Company Stockholders' Equity [Member] Stock-Based Compensation on Tender Offer [Member]	Noncontrolling Interests [Member]
Beginning Balance at Dec. 31, 2016	$ 14,003		$ 4	$ 8,103		$ (1,452)	$ 7,285	$ 13,940		$ 63
Begining Balance, shares at Dec. 31, 2016			379
Net income (loss)	(236)						(237)	(237)		1
Other comprehensive income (loss), net	342					342		342
Cash dividends, per common share	(76)						(76)	(76)
Noncontrolling interest	2									2
Adoption of new accounting standards	(5)			1			(6)	(5)
Stock-based compensation	105	$ 20		105	$ 20			105	$ 20
Common stock issued	13			13				13
Common stock issued, shares			1
Withholding taxes	(8)			(8)				(8)
Ending Balance at Dec. 31, 2017	14,160		$ 4	8,234		(1,110)	6,966	14,094		66
Ending Balance, shares at Dec. 31, 2017			380
Net income (loss)	(22)						(31)	(31)		9
Other comprehensive income (loss), net	(327)					(327)		(327)
Cash dividends, per common share	(76)						(76)	(76)
Noncontrolling interest	(5)									(5)
Adoption of new accounting standards	3						3	3
Stock-based compensation	110			110				110
Common stock issued	54			54				54
Common stock issued, shares			3
Withholding taxes	(8)			(8)				(8)
Ending Balance at Dec. 31, 2018	13,889		$ 4	8,390		(1,437)	6,862	13,819		70
Ending Balance, shares at Dec. 31, 2018			383
Net income (loss)	(6,093)						(6,095)	(6,095)		2
Other comprehensive income (loss), net	14					14		14
Cash dividends, per common share	(77)						(77)	(77)
Noncontrolling interest	(4)									(4)
Stock-based compensation	130			130				130
Common stock issued	7			7				7
Common stock issued, shares			3
Withholding taxes	(20)			(20)				(20)
Ending Balance at Dec. 31, 2019	$ 7,846		$ 4	$ 8,507		$ (1,423)	$ 690	$ 7,778		$ 68
Ending Balance, shares at Dec. 31, 2019			386

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Fair Value of Financial Instruments

The carrying amounts of financial instruments including cash and cash equivalents, receivables, and payables approximated fair value because of the relatively short maturity of these instruments. Cash equivalents include only those investments having a maturity date of three months or less at the time of purchase.

Derivative Financial Instruments

The Company records all derivative financial instruments at their fair value in its Consolidated Balance Sheet. Except for certain non-designated hedges discussed below, all derivative financial instruments that the Company holds are designated as cash flow hedges and are highly effective in offsetting movements in the underlying risks. Such arrangements typically have terms between two and 24 months, but may have longer terms depending on the underlying cash flows being hedged, typically related to the projects in our backlog.

Inventories

Inventories are stated at the lower of cost or estimated net realizable value using the first-in, first-out or average cost methods. Inventories consist of raw materials and supplies, work-in-process and finished goods and purchased products. The Company reviews historical usage of inventory on-hand, assumptions about future demand and market conditions, and estimates about potential alternative uses, which are limited, to estimate net realizable value. The Company evaluates inventory quarterly using the best information available at the time to inform our assumptions and estimates about future demand and resulting sales volumes, and recognizes reserves as necessary to properly state inventory.

Based on an update of our assumptions at each point in time related to estimates of future demand, we recorded charges for additions to inventory reserves of $659 million, $49 million, and $114 million for the years ended December 31, 2019, 2018, and 2017, respectively, consisting primarily of obsolete and surplus inventories. At December 31, 2019 and 2018, inventory reserves totaled $843 million and $644 million, or 27.7% and 17.7% of gross inventory, respectively.

Property, Plant and Equipment

Property, plant and equipment are recorded at cost. Expenditures for major improvements that extend the lives of property and equipment are capitalized while minor replacements, maintenance and repairs are charged to operations as incurred. Disposals are removed at cost less accumulated depreciation with any resulting gain or loss reflected in operations. Depreciation is provided using the straight-line method over the estimated useful lives of individual items. Depreciation expense was $355 million, $349 million and $359 million for the years ended December 31, 2019, 2018 and 2017, respectively. The estimated useful lives of the major classes of property, plant and equipment are included in Note 5 to the consolidated financial statements.

We record impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets are impaired and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. The carrying value of assets used in operations that are not recoverable is reduced to fair value if lower than carrying value. In determining the fair market value of the assets, we consider market trends and recent transactions involving sales of similar assets, or when not available, discounted cash flow analysis. Impairments of plant, property and equipment were $252 million, $21 million and $10 million for the years ended December 31, 2019, 2018 and 2017, respectively.

Lease Right-of-Use Assets

The Company leases certain facilities and equipment to support its operations around the world. These leases generally require the Company to pay maintenance, insurance, taxes and other operating costs in addition to rent. Renewal options are common in longer term leases; however, it is rare that the Company intends to exercise a lease option at inception due to the cyclical nature of the Company’s business. Residual value guarantees are not typically part of the Company’s leases. Occasionally, the Company sub-leases excess facility space, generally at terms similar to the source lease. The Company reviews new agreements to determine if they include a lease and, when they do, uses its incremental borrowing rate to determine the present value of the future lease payments as most do not include implicit interest rates. The Company recorded impairment charges of $56 million for the year ended December 31, 2019 and no charges for the years ended December 31, 2018 and 2017.

Acquisitions and Investments

Acquisitions of businesses are accounted for using the acquisition method of accounting, and the financial statements include the results of the acquired operations from the respective dates of acquisition.

The purchase price of the acquired entities is preliminarily allocated to the net assets acquired and liabilities assumed based on the estimated fair value at the dates of acquisition, with any excess of cost over the fair value of net assets acquired, including intangibles, recognized as goodwill. Subsequent changes to preliminary amounts are made prospectively.

The Company paid cash of $180 million, $280 million and $86 million for acquisitions for the years ended December 31, 2019, 2018 and 2017, respectively. These acquisitions did not have a material effect on the Company’s operating results, cash flows or financial position

Foreign Currency

The functional currency for most of our foreign operations is the local currency. However, certain foreign operations, including our operations in Norway, use the U.S. dollar as the functional currency. The cumulative effects of translating the balance sheet accounts from the functional currency into the U.S. dollar at current exchange rates are included in accumulated other comprehensive income (loss). Revenues and expenses are translated at average exchange rates in effect during the period. Accordingly, financial statements of these foreign subsidiaries are remeasured to U.S. dollars for consolidation purposes using current rates of exchange for monetary assets and liabilities and historical rates of exchange for nonmonetary assets and related elements of expense. Revenue and expense elements are remeasured at rates that approximate the rates in effect on the transaction dates. For all operations, gains or losses from remeasuring foreign currency transactions into the functional currency are included in income. Net foreign currency transaction losses were $36 million, $52 million and $3 million for the years ending December 31, 2019, 2018 and 2017, respectively, and are included in other income (expense) in the accompanying statement of income (loss).

Revenue Recognition

The majority of the Company’s revenue streams record revenue at a point in time when a performance obligation has been satisfied by transferring control of promised goods or services to a customer. Products are sold or rented and services are provided based upon a fixed or determinable price and do not generally include right of return or other significant post-delivery obligations. Revenue is recognized net of any taxes collected from customers, which are subsequently remitted to governmental authorities. Payment terms and conditions vary by contract type. We have elected to apply the practical expedient that does not require an adjustment for a financing component if, at contract inception, the period between when we transfer the promised goods or service to the customer and when the customer pays for the goods or service is one year or less. Shipping and handling costs are recognized when incurred and are treated as costs to fulfill the original performance obligation instead of as a separate performance obligation.

Revenue is generated from contracts that may include multiple performance obligations. Using significant judgement, the Company considers the degree of customization, integration and interdependency of the related products and services when assessing distinct performance obligations within one contract. Stand-alone selling price (“SSP”) for each distinct performance obligation is generally determined using the price at which the products and services would be sold separately to the customer. Discounts, when provided, are allocated based on the relative SSP of the various products and services.

For revenue that is not recognized at a point in time, the Company follows accounting guidance for revenue recognized over time, as follows:

Revenue Recognition under Long-term Construction Contracts

Revenue is recognized over-time for certain long-term construction contracts in the Completion & Production Solutions and Rig Technologies segments. These contracts include custom designs for customer-specific applications that are unique and require significant engineering efforts. Revenue is recognized as work progresses on each contract. Right to payment is enforceable for performance completed to date, including a reasonable profit.

Because of control transferring over time, revenue is recognized based on the extent of progress towards completion of the performance obligation. We generally use the cost-to-cost (input) measure of progress for our contracts because it best depicts the transfer of assets to the customer which occurs as we incur costs. Under the cost-to-cost measure of progress, progress towards completion of each contract is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues, including estimated fees or profits, are recorded proportionally as costs are incurred. These costs include labor, materials, subcontractors’ costs, and other direct costs. Any expected losses on a project are recorded in full in the period in which the loss becomes probable.

These long-term construction contracts generally include a significant service of integrating a complex set of tasks and components into a single project or capability, so are accounted for as one performance obligation.

Estimating total revenue and cost at completion of long-term construction contracts is complex, subject to many variables and requires significant judgement. It is common for our long-term contracts to contain late delivery fees, work performance guarantees, and other provisions that can either increase or decrease the transaction price. We estimate variable consideration as the most likely amount we expect to receive. We include variable consideration in the estimated transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur, or when the uncertainty associated with the variable consideration is resolved. Our estimates of variable consideration and determination of whether to include estimated amounts in the transaction price are based on an assessment of our anticipated performance and historical, current and forecasted information that is reasonably available to us. Net revenue recognized from performance obligations satisfied in previous periods was $62 million and $65 million for the years ended December 31, 2019 and 2018, respectively, primarily due to change orders.

Service and Repair Work

For service and repair contracts, revenue is recognized over time. We generally use the output method to measure progress on service contracts due to the manner in which the customer receives and derives value from the services provided. For repair contracts, we generally use the cost-to-cost measure of progress because it best depicts the transfer of assets to the customer.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm orders for all revenue streams for which work has not been performed on contracts with an original expected duration of one year or more. We do not disclose the remaining performance obligations of royalty contracts, service contracts for which there is a right to invoice, and short-term contracts that are expected to have a duration of one year or less.

As of December 31, 2019, the aggregate amount of the transaction price allocated to remaining performance obligations was $4,286 million. The Company expects to recognize approximately $1,084 million in revenue for the remaining performance obligations in 2020 and $3,202 million in 2021 and thereafter.

Costs to Obtain and Fulfill a Contract

We recognize an asset for the incremental costs of obtaining a contract, such as sales commissions, with a customer when we expect the benefit of those costs to be longer than one year. Costs to fulfill a contract, such as set-up and mobilization costs, are also capitalized when we expect to recover those costs. These contract costs are deferred and amortized over the period of contract performance. Total capitalized costs to obtain and fulfill a contract and the related amortization were immaterial during the periods presented and are included in other current and long-term assets on our consolidated balance sheets. We apply the practical expedient to expense costs as incurred for costs to obtain a contract with a customer when the amortization period would have been one year or less.

Service and Product Warranties

The Company provides service and warranty policies on certain of its products. The Company accrues liabilities under service and warranty policies based upon specific claims and a review of historical warranty and service claim experience. Adjustments are made to accruals as claim data and historical experience change. In addition, the Company incurs discretionary costs to service its products in connection with product performance issues and accrues for them when they are encountered. The Company monitors the actual cost of performing these discretionary services and adjusts the accrual based on the most current information available.

The changes in the carrying amount of service and product warranties are as follows (in millions):

Balance at December 31, 2017	$	135
Net provisions for warranties issued during the year		38
Amounts incurred		(67	)
Currency translation adjustments		(1	)
Balance at December 31, 2018	$	105
Net provisions for warranties issued during the year		41
Amounts incurred		(56	)
Currency translation adjustments		—
Balance at December 31, 2019	$	90

Income Taxes

The liability method is used to account for income taxes. Deferred tax assets and liabilities are determined based on differences between the financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates that will be in effect when the differences are expected to reverse. Valuation allowances are established when necessary to reduce deferred tax assets to amounts which are more likely than not to be realized.

Concentration of Credit Risk

We grant credit to our customers, which operate primarily in the oil and gas industry. Concentrations of credit risk are limited because we have a large number of geographically diverse customers, thus spreading trade credit risk. We control credit risk through credit evaluations, credit limits and monitoring procedures. We perform periodic credit evaluations of our customers’ financial condition and generally do not require collateral, but may require letters of credit for certain international sales. Credit losses are provided for in the financial statements. Allowances for doubtful accounts are determined based on a continuous process of assessing the Company’s portfolio on an individual customer basis taking into account current market conditions and trends. This process consists of a thorough review of historical collection experience, current aging status of the customer accounts, and financial condition of the Company’s customers. Based on a review of these factors, the Company will establish or adjust allowances for specific customers. Accounts receivable are net of allowances for doubtful accounts of approximately $132 million and $161 million at December 31, 2019 and 2018, respectively.

Stock-Based Compensation

Compensation expense for the Company’s stock-based compensation plans is measured using the fair value method. The fair value of stock option grants and restricted stock is amortized to expense using the straight-line method over the shorter of the vesting period or the remaining employee service period.

The Company provides compensation benefits to employees and non-employee directors under share-based payment arrangements, including various employee stock option plans.

Environmental Liabilities

When environmental assessments or remediations are probable and the costs can be reasonably estimated, remediation liabilities are recorded on an undiscounted basis and are adjusted as further information develops or circumstances change.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect reported and contingent amounts of assets and liabilities as of the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Such estimates include but are not limited to, estimated losses on accounts receivable, estimated costs and related margins of projects accounted for over time, estimated realizable value on excess and obsolete inventory, contingencies, estimated liabilities for litigation exposures and liquidated damages, estimated warranty costs, estimates related to pension accounting, estimates related to the fair value of Reporting Units for purposes of assessing goodwill and other indefinite-lived intangible assets for impairment and estimates related to deferred tax assets and liabilities, including valuation allowances on deferred tax assets. Actual results could differ from those estimates.

Contingencies

The Company accrues for costs relating to litigation claims and other contingent matters, including liquidated damage liabilities, when such liabilities become probable and reasonably estimable. In circumstances where the most likely outcome of a contingency can be reasonably estimated, we accrue a liability for that amount. Where the most likely outcome cannot be estimated, a range of potential losses is established and if no one amount in that range is more likely than others, the low end of the range is accrued. Such estimates may be based on advice from third parties or on management’s judgement, as appropriate. Revisions to contingent liabilities are reflected in income in the period in which different facts or information become known or circumstances change that affect the Company’s previous judgements with respect to the likelihood or amount of loss. Amounts paid upon the ultimate resolution of contingent liabilities may be materially different from previous estimates and could require adjustments to the estimated reserves to be recognized in the period such new information becomes known.

Net Loss Attributable to Company Per Share

The following table sets forth the computation of weighted average basic and diluted shares outstanding (in millions, except per share data):

	Years Ended December 31,
	2019			2018			2017
Numerator:
Net loss attributable to Company	$	(6,095	)	$	(31	)	$	(237	)
Denominator:
Basic—weighted average common shares outstanding		382			378			377
Dilutive effect of employee stock options and other unvested stock awards		—			—			—
Diluted outstanding shares		382			378			377
Basic loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Diluted loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Cash dividends per share	$	0.20		$	0.20		$	0.20

Net loss attributable to Company allocated to participating securities was immaterial for the years ended December 31, 2019, 2018 and 2017 and therefore not excluded from net loss attributable to Company per share calculation. The Company had stock options outstanding that were anti-dilutive totaling 20 million, 20 million, and 12 million at December 31, 2019, 2018 and 2017, respectively.

Recently Adopted Accounting Standards

In August 2017, the FASB issued Accounting Standard Update No. 2017-12 “Derivatives and Hedging – Targeted Improvements to Accounting for Hedging Activities” (ASU 2017-12). This update improves the financial reporting of hedging relationships and simplifies the application of the hedge accounting guidance. ASU 2017-12 is effective for fiscal periods beginning after December 15, 2018, and for interim periods within those fiscal years. The Company adopted this update on January 1, 2019, with no material impact.

In March 2016, the FASB issued ASC Topic 842, “Leases” (ASC Topic 842), which supersedes the lease requirements in ASC Topic No. 840 “Leases” and most industry-specific guidance. This update increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. ASC Topic 842 is effective for fiscal years beginning after December 15, 2018, and for interim periods within those fiscal years. The Company adopted ASU Topic 842 on January 1, 2019. Refer to Note 7, Leases, for the impact of this adoption on the Company’s financial statements.

In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows for a reclassification from accumulated other comprehensive income (AOCI) to retained earnings for stranded tax effects resulting from the U.S. Tax Cuts and Jobs Act (the “Tax Act”). The Company adopted ASU Topic 2018-02 on January 1, 2019 and elected not to reclassify stranded tax effects caused by tax reform from AOCI to retained earnings.

Recently Issued Accounting Standards

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments. This update improves financial reporting by requiring earlier recognition of credit losses on financing receivables and other financial assets in scope. ASU 2016-13 is effective for fiscal periods beginning after December 15, 2019, including interim periods within those fiscal years. The Company is currently evaluating the effect of adopting this standard but does not expect it to be material.

In December 2019, the FASB issued ASU 2019-12, “Simplifying the Accounting for Income Taxes.” This ASU eliminates certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. It also clarifies and simplifies other aspects of accounting for income taxes. ASU 2019-12 is effective for interim and annual reporting periods beginning after December 15, 2020, with early adoption permitted. Management is currently assessing the impact of adopting ASU 2019-12 on the company’s financial position, results of operations and cash flows.

Derivative Financial Instruments

12 Months Ended

Dec. 31, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

3. Derivative Financial Instruments

The Company uses derivative financial instruments to manage its foreign currency exchange rate risk. Forward currency contracts are executed to manage the foreign currency exchange rate risk on forecasted revenues and expenses denominated in currencies other than the functional currency of the operating unit (cash flow hedge). The Company also executes forward currency contracts to manage the foreign currency exchange rate risk on recognized nonfunctional currency monetary accounts (non-designated hedge).

Forward currency contracts consist of (in millions):

Currency Denomination

Currency

December 31, 2019

December 31, 2018

South Korean Won

KRW

17,600

KRW

—

Norwegian Krone

NOK

5,377

NOK

5,229

Russian Ruble

RUB

1,012

RUB

—

U.S. Dollar

USD

686

USD

631

Euro

EUR

188

EUR

172

South African Rand

ZAR

124

ZAR

124

Mexican Peso

MXN

115

MXN

204

Singapore Dollar

SGD

—

Japanese Yen

JPY

121

Danish Krone

DKK

British Pound Sterling

GBP

Canadian Dollar

CAD

—

Cash Flow Hedging Strategy

To protect against the volatility of forecasted foreign currency cash flows resulting from forecasted revenues and expenses, the Company maintains a cash flow hedging program. For derivative instruments that are designated and qualify as a cash flow hedge, the gain or loss on the derivative instrument is recorded in accumulated other comprehensive income (loss) and reclassified into earnings in the same line item associated with the forecasted transaction and in the same period or periods during which the hedged transaction affects earnings (e.g., in “revenues” when the hedged transactions are cash flows associated with forecasted revenues). The Company includes time value in hedge relationships.

The Company expects accumulated other comprehensive income (loss) of $7 million will be reclassified into earnings within the next twelve months.

Non-designated Hedging Strategy

The Company enters into forward exchange contracts to hedge certain nonfunctional currency monetary accounts. The gain or loss on the derivative instrument is recognized in earnings in other income (expense), together with the changes in the hedged nonfunctional monetary accounts.

The amount of gain (loss) recognized in other income (expense), net was ($12) million, $2 million and ($11) million for the years ended 2019, 2018 and 2017, respectively.

The Company has the following fair values of its derivative instruments and their balance sheet classifications (in millions):

	Fair Values of Derivative Instruments (In millions)
	Asset Derivatives					Liability Derivatives
		Fair Value					Fair Value
	Balance Sheet	December 31,				Balance Sheet	December 31,
	Location	2019		2018		Location	2019		2018
Derivatives designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	5	$	2	Accrued liabilities	$	18	$	17
Foreign exchange contracts	Other Assets		4		—	Other Liabilities		2		11
Total derivatives designated as hedging instruments under ASC Topic 815		$	9	$	2		$	20	$	28
Derivatives not designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	8	$	4	Accrued liabilities	$	6	$	6
Foreign exchange contracts	Other Assets		1		—	Other Liabilities		—		2
Total derivatives not designated as hedging instruments under ASC Topic 815		$	9	$	4		$	6	$	8
Total derivatives		$	18	$	6		$	26	$	36

Inventories, net

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Inventories, net

4. Inventories, net

Inventories consist of (in millions):

	December 31,
	2019			2018
Raw materials and supplies	$	577		$	614
Work in process		364			501
Finished goods and purchased products		2,099			2,515
		3,040			3,630
Less: Inventory reserve		(843	)		(644	)
Total	$	2,197		$	2,986

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

5. Property, Plant and Equipment, net

Property, plant and equipment consist of (in millions):

	Estimated	December 31,
	Useful Lives	2019			2018
Land		$	231		$	227
Buildings and improvements	5-35 Years		1,309			1,271
Operating equipment	2-20 Years		2,946			3,140
Rental equipment	2-15 Years		851			597
Capital leases			—			249
			5,337			5,484
Less: Accumulated Depreciation			(2,983	)		(2,687	)
		$	2,354		$	2,797

Asset Impairments

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Asset Impairments

6. Asset Impairments

Impairment of Goodwill and Other Indefinite-Lived Intangible Assets

The Company tests intangible assets for impairment annually, or more frequently if events or circumstances indicate they could be impaired. Potential impairment indicators include (but are not limited to) a sustained increase in worldwide inventories of oil or gas or sustained reductions in: worldwide oil and gas prices or drilling activity; the profitability or cash flow of oil and gas companies or drilling contractors; available financing or other capital investment for oil and gas companies or drilling contractors; the market capitalization of the Company or its customers; or capital investments by drilling companies and oil and gas companies.

The global oil and gas market downturn that began in 2014 has repeatedly exhibited signs of recovery that subsequently faded. During the second quarter of 2019, several market indicators hit new decade-lows, consistent with a more prolonged downturn for the industry and diminished probability of a stronger near-term recovery. The Company’s stock price reached a fourteen-year low during the quarter and its market capitalization was below its carrying value. Also, during the quarter, the Oil Services Index (OSX), an indicator of the health and the cost of capital of the oil and gas services industry (and of the Company’s primary customer base), hit a low not seen since 2004. The OSX traded down approximately 14 percent from the first quarter to the second quarter of 2019, reflecting a policy of capital discipline adopted by oil and gas producers during the quarter, diminished access to capital, and a higher cost of capital to oilfield services firms. Management reduced its outlook accordingly. In the Company’s view, falling rig count levels in the second quarter provided tangible proof to the equity markets that oil and gas producers were committed to reduced levels of capital investment in drilling, which will lead to reduced levels of demand for oilfield services, and to reduced levels of demand for the capital equipment that the Company sells to its oilfield services customers. Additionally, the second quarter saw the number of oilfield services firms declaring bankruptcy increase, including one of the Company’s large-cap peers and substantial customers. In management’s judgement the facts and circumstances including those described above constituted a triggering event in the second quarter which indicated the Company’s goodwill and other long-lived assets may be impaired. The Company performed a detailed Step 1 analysis under ASC 350, incorporating this refined outlook, which determined that the fair values were less than the respective carrying values for the following reporting units: Rig Equipment, Marine Construction, Downhole, ReedHycalog, IntelliServ, Grant Prideco, Tuboscope, Wellsite Services, Intervention & Stimulation Equipment, Floating Production Systems, XL Systems, Subsea Production Systems, Fiberglass Systems and Process & Flow Technologies (“Reporting Units”).

The Company primarily uses the discounted cash flow method to estimate the fair value of its Reporting Units when conducting the impairment test, but also considers the comparable companies and representative transaction methods to validate the test result and management’s forecast and other expectations, where possible. The valuation techniques used in the test were consistent with those used during previous testing. Fair value of the Reporting Unit is determined using significant unobservable inputs, or level 3 in the fair value hierarchy. These inputs are based on internal management estimates, forecasts and judgements, using discounted cash flow. The inputs used in the test were updated to reflect management’s judgement, current market conditions and forecasts.

The discounted cash flow was based on management’s forecast of operating performance for each Reporting Unit. The two main assumptions used, which bear the risk of change and could impact the test result, include the forecast cash flow from operations from each of the Company’s Reporting Units and their respective weighted average cost of capital. The starting point for each of the Reporting Unit’s cash flow from operations was the detailed mid-year plan, modified to incorporate our revised outlook, as appropriate. The Reporting Unit carrying values were adjusted based on the long-lived asset impairment assessment noted below. Cash flows beyond the plan or forecast were estimated using a terminal value calculation which incorporated historical and forecasted financial cyclical trends for each Reporting Unit and considered long-term earnings growth rates. Financial and credit market volatility directly impacts our fair value measurement through the weighted average cost of capital used to determine a discount rate. During times of volatility, significant judgement must be applied to determine whether credit changes are a short-term or long-term trend.

For the second quarter of 2019, the Company recorded $3,099 million in impairment charges to goodwill and $87 million in charges to indefinite-lived intangible assets.

During the third quarter, the Company combined two Reporting Units within the Completion & Production Solutions segment, Floating Production and Process & Flow Technologies. The restructuring better aligns operations with the current and anticipated market environments and reduces administrative burden. The Company tested the two Reporting Units for goodwill impairment prior to, and after, combining them and concluded no impairment charges were necessary.

Also, during the third quarter, the Company’s Wellbore Technologies segment reorganized two of its Reporting Units. The Company performed a goodwill impairment analysis prior and subsequent to the restructuring and concluded no impairment charges were necessary. The restructuring did not affect Wellbore Technologies’ consolidated financial position and results of operations.

The Company conducted its annual impairment test during the fourth quarter of 2019, as of October 1, 2019, using the same process described above for the second quarter test. During the fourth quarter, drilling activity further declined in North America as U.S. rig count experienced its first double digit sequential decline since 2016. This and other market condition deteriorations during the fourth quarter reduced management’s near-term market and recovery path expectations, and the forecasts used in the impairment test. Based on the assessment, the Company recorded $410 million in impairment charges to goodwill and $16 million in charges to indefinite-lived intangibles. Following the impairment charges, several Reporting Units did not have a fair value substantially in excess of their book value. Further deterioration of market conditions, in management’s judgement, beyond those incorporated into the extended forecast by management, will likely result in additional impairment charges. The remaining goodwill balance for these Reporting Units at December 31, 2019 is as follows: Marine Construction ($57 million), Downhole ($124 million), ReedHycalog ($358 million), Grant Prideco ($125 million), M/D Totco ($63 million), PFT ($407 million), and Completion Tools ($20 million).

The Company has approximately $2.8 billion of goodwill, by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2017	$	2,956		$	2,122		$	1,149		$	6,227
Goodwill acquired and adjusted during period		64			(33	)		71			102
Currency translation adjustments		(9	)		(48	)		(8	)		(65	)
Balance at December 31, 2018		3,011			2,041			1,212			6,264
Goodwill acquired and adjusted during period		9			40			13			62
Impairment		(2,178	)		(1,019	)		(312	)		(3,509	)
Currency translation adjustments		1			(8	)		(3	)		(10	)
Balance at December 31, 2019 (1)	$	843		$	1,054		$	910		$	2,807

(1)	Accumulated goodwill impairment was $5,966 million as of December 31, 2019.

Impairment of Long-Lived Assets (Excluding Goodwill and Other Indefinite-Lived Intangible Assets)

Long-lived assets, which include property, plant and equipment, right of use, and finite-lived intangible assets, comprise a significant amount of the Company’s total assets. The Company makes judgements and estimates in conjunction with the carrying value of these assets, including amounts to be capitalized, depreciation and amortization methods and estimated useful lives.

The Company identified its Reporting Units as individual asset groups. The carrying values of these asset groups are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable. An impairment loss is recorded in the period in which it is determined that the carrying amount of the asset is not recoverable based on estimated future undiscounted cash flows. We estimate the fair value of these intangible and fixed assets using an income approach that requires the Company to make long-term forecasts of its future revenues and costs related to the assets subject to review. These forecasts require assumptions about demand for the Company’s products and services, future market conditions and technological developments. The forecasts are dependent upon assumptions including those regarding oil and gas prices, the general outlook for the global oil and gas industry, available financing for the Company’s customers, political stability in major oil and gas producing areas, and the potential obsolescence of various types of equipment we sell, among other factors. Financial and credit market volatility directly impacts our fair value measurement through our income forecast. Changes to these assumptions, including, but not limited to: sustained declines in worldwide rig counts below current analysts’ forecasts; collapse of spot and futures prices for oil and gas; significant deterioration of external financing for our customers; higher risk premiums or higher cost of equity; or any other significant adverse economic news could require a provision for impairment.

During the second quarter of 2019, the results of the Company's test for impairment of goodwill and indefinite-lived intangible assets, and the other negative market indicators described above, were a triggering event that indicated that its long-lived tangible assets and finite-lived intangible assets were impaired.

Impairment testing performed in the second quarter resulted in the determination that certain long-lived assets associated with most of the Company’s asset groups were not recoverable. The estimated fair value of these asset groups was below the carrying value and as a result, during the second quarter of 2019, the Company recorded impairment charges of $1,901 million to customer relationships, patents, trademarks, tradenames, and other finite-lived intangible assets, $230 million to property, plant and equipment, and $56 million for right-of-use assets. During the second half of 2019, the Company recorded $22 million impairment charges to property, plant and equipment ($5 million in the Wellbore Technologies segment, $7 million in the Completion & Production Solutions segment, and $10 million in the Rig Technologies segment).

Remaining identified intangible assets with determinable lives consist primarily of customer relationships, trademarks, trade names, patents, and technical drawings acquired in acquisitions, and are being amortized in a manner consistent with the underlying cash flows over the estimated useful lives of 2-30 years. Amortization expense of identified intangibles is expected to be approximately $61 million, $57 million, $55 million, $48 million, and $43 million for the next five years.

The Company has approximately $852 million of identified intangible assets, by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2017	$	1,883		$	1,160		$	258		$	3,301
Additions to intangible assets		41			3			55			99
Amortization		(201	)		(111	)		(29	)		(341	)
Currency translation adjustments		12			(47	)		(4	)		(39	)
Balance at December 31, 2018	$	1,735		$	1,005		$	280		$	3,020
Impairment		(1,314	)		(690	)		—			(2,004	)
Additions to intangible assets		6			11			—			17
Amortization		(94	)		(56	)		(28	)		(178	)
Currency translation adjustments		(7	)		5			(1	)		(3	)
Balance at December 31, 2019	$	326		$	275		$	251		$	852

Identified intangible assets by major classification consist of the following (in millions):

	Gross		Accumulated Amortization			Net Book Value
December 31, 2018:
Customer relationships	$	4,078	$	(2,352	)	$	1,726
Trademarks		891		(341	)		550
Patents		661		(414	)		247
Indefinite-lived trade names		383		—			383
Other		491		(377	)		114
Total identified intangibles	$	6,504	$	(3,484	)	$	3,020
December 31, 2019:
Customer relationships	$	598	$	(305	)	$	293
Trademarks		190		(123	)		67
Patents		121		(47	)		74
Indefinite-lived trade names		280		—			280
Other		283		(145	)		138
Total identified intangibles	$	1,472	$	(620	)	$	852

Accrued Liabilities

12 Months Ended

Dec. 31, 2019

Payables And Accruals [Abstract]

Accrued Liabilities

7. Accrued Liabilities

Accrued liabilities consist of (in millions):

	December 31,
	2019		2018
Vendor costs	$	121	$	127
Compensation		270		331
Taxes (non income)		112		124
Warranty		90		105
Insurance		57		55
Fair value of derivatives		24		23
Commissions		31		34
Interest		8		7
Other		236		282
Total	$	949	$	1,088

Leases

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

8. Leases

Effective January 1, 2019 the Company adopted the new US GAAP accounting rules in ASC Topic 842, Leases (ASC 842), using the modified retrospective method. The Company elected to follow the package of practical expedients provided under the transition guidance within ASC 842, the practical expedient to account for lease and non-lease components as a single lease, and to not include leases with an initial term of less than 12 months in lease assets and liabilities.

At adoption of ASC 842, the Company had lease right-of-use assets of $786 million ($537 million operating and $249 million financing) and lease liabilities of $839 million ($554 million operating and $285 million financing). The adoption had no material effect on retained earnings.

At adoption of ASC 842, for those existing leases that included a periodic rent adjustment based on an index (or a similar variable rate), the asset and liability balances were updated with the January 1, 2019 index. Going forward, new such leases are initially valued at the index rate in effect on the lease commencement date. For all continuing such leases, subsequent changes in variable rates will be recorded to expense.

Components of leases are as follows (in millions):

	December 31,
	2019		2018
Current portion of lease liabilities:
Operating	$	84	$	—
Financing		30		7
Total	$	114	$	7

	December 31,
	2019		2018
Long-term portion of lease liability:
Operating	$	424	$	—
Financing		250		222
Total	$	674	$	222

Components of lease expense were as follows (in millions):

	Years Ended
	December 31, 2019
Lease cost
Finance lease cost
Amortization of right-of-use assets	$	32
Interest on lease liabilities		13
Operating lease cost		115
Short-term lease cost		68
Sub-lease income		(11	)
Total	$	217

Supplemental information related to the Company’s leases is as follows (in millions):

	Year Ended
	December 31, 2019
Other information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows - finance leases	$	13
Operating cash flows - operating leases		115
Financing cash flows - finance leases		32
Right-of-use assets obtained in exchange for new:
Operating lease liabilities		53
Finance lease liabilities	$	12

Weighted average remaining lease term at December 31, 2019:
Operating leases	10 years
Finance leases	16 years
Weighted average discount rate at December 31, 2019:
Operating leases		4.48	%
Finance leases		4.58	%

Future minimum lease commitments for leases with initial or remaining terms of one year or more at December 31, 2019, are payable as follows (in millions):

	Operating			Finance
2020	$	98		$	38
2021		81			33
2022		64			25
2023		49			18
2024		40			15
Thereafter		228			210
Total lease payments		560			339
Less: Interest		(52	)		(59	)
Present value of lease liabilities	$	508		$	280

Debt

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt

9. Debt

Debt consists of (in millions):

	December 31,
	2019		2018
$1.1 billion in Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042		1,088		1,088
$0.5 billion in Senior Notes, interest at 3.60% payable semiannually, principal due on December 1, 2029		493		—
$0.4 billion in Senior Notes, interest at 2.60% payable semiannually, principal due on December 1, 2022		399		1,394
Other debt		9		—
Long-term debt	$	1,989	$	2,482

Principal payments of debt for years subsequent to 2019 are as follows (in millions):

2020		—
2021		—
2022		400
2023		—
2024		—
Thereafter		1,589
	$	1,989

Amended Revolving Credit Facility

Effective October 30, 2019, the Company amended its five-year unsecured revolving credit facility, decreasing its borrowing availability to $2 billion and extended its maturity to October 30, 2024. The Company has the right to increase the aggregate commitments under this new agreement to an aggregate amount of up to $3.0 billion upon the consent of only those lenders holding any such increase. Interest under the new multicurrency facility is based upon LIBOR, NIBOR or CDOR plus 1.125% subject to a ratings-based grid or the U.S. prime rate. The new credit facility contains a financial covenant regarding maximum debt-to-capitalization ratio of 60%. As of December 31, 2019, the Company was in compliance with a debt-to-capitalization ratio of 22.4%.

The Company has a commercial paper program under which borrowings are classified as long-term since the program is supported by the $2.0 billion, five-year credit facility. At December 31, 2019, there were no commercial paper borrowings, and there were no outstanding letters of credit issued under the credit facility, resulting in $2.0 billion of funds available under this credit facility.

Issuance of unsecured Senior Notes Due 2029

On November 4, 2019, the Company issued $500 million of 3.60% unsecured Senior Notes due 2029. The net proceeds were $493 million, after deducting $3 million in underwriting fees and a $4 million discount. Interest on each series of notes is due on June 1 and December 1 of each year, beginning on June 1, 2020. The Company may redeem some or all of the Senior Notes at any time at the applicable redemption price, plus accrued interest, if any, to the redemption date. At December 31, 2020, the Company was in compliance with the covenants under the indenture governing the Senior Notes.

Redemption of unsecured Senior Notes Due 2022

On December 4, 2019, the Company repaid $1 billion of its 2.60% unsecured Senior Notes using available cash balances. Upon redemption, the Company paid $1,023 million, which included a redemption premium of $23.1 million as well as accrued and unpaid interest of $0.2 million. As a result of the redemption, the Company recorded a loss on extinguishment of debt of $26 million, which included the make whole premium of $23 million and non-cash charges of $3 million attributable to the write-off of unamortized discount and debt issuance costs.

The Company had $502 million of outstanding letters of credit at December 31, 2019, primarily in the U.S. and Norway, that are under various bilateral letter of credit facilities. Letters of credit are issued as bid bonds, advanced payment bonds and performance bonds.

At December 31, 2019 and 2018, the fair value of the Company’s unsecured Senior Notes approximated $1,947 million and $2,211 million, respectively. The fair value of the Company’s debt is estimated using Level 2 inputs in the fair value hierarchy and is based on quoted prices for those or similar instruments. At December 31, 2019 and 2018, the carrying value of the Company’s unsecured Senior Notes approximated $1,980 million and $2,482 million, respectively.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Employee Benefit Plans

10. Employee Benefit Plans

We have benefit plans covering substantially all of our employees. Defined-contribution benefit plans cover most of the U.S. and Canadian employees, and benefits are based on years of service, a percentage of current earnings and matching of employee contributions. We also have defined contribution plans in Norway and the United Kingdom. For the years ended December 31, 2019, 2018 and 2017, expenses for defined-contribution plans were $70 million, $68 million, and $64 million, respectively, and all funding is current.

Certain retired or terminated employees of predecessor or acquired companies participate in a defined benefit plan in the United States. Approximately 24 employees represented by certain collective bargaining agreements continue to accrue benefits under the plan. In addition, approximately 1,912 U.S. retirees and spouses participate in defined benefit health care plans of predecessor or acquired companies that provide postretirement medical and life insurance benefits. Except for two locations represented by certain collective bargaining agreements, active employees are ineligible to participate in any of these U.S. defined benefit plans. Active employees based in the United Kingdom are ineligible to participate in any defined benefit plans.

Net periodic benefit income (cost) for our defined benefit plans aggregated $2 million, $3 million and $(1) million for the years ended December 31, 2019, 2018 and 2017, respectively.

The change in benefit obligation, plan assets and the funded status of the defined benefit pension plans in the United States, United Kingdom, Norway, Germany and the Netherlands and defined postretirement plans in the United States, using a measurement date of December 31, 2019 and 2018, is as follows (in millions):

	Pension benefits						Postretirement benefits
At year end	2019			2018			2019			2018
Benefit obligation at beginning of year	$	575		$	633		$	45		$	62
Service cost		1			1			—			—
Interest cost		18			18			2			2
Actuarial loss (gain)		42			(24	)		(15	)		(8	)
Benefits paid		(29	)		(40	)		(11	)		(13	)
Participants contributions		—			—			2			2
Exchange rate loss (gain)		5			(15	)		—			—
Special events		—			—			30			—
Plan amendments		—			4			—			—
Settlements		(12	)		(2	)		—			—
Benefit obligation at end of year	$	600		$	575		$	53		$	45

Fair value of plan assets at beginning of year	$	517		$	588		$	—		$	—
Actual return		80			(21	)		—			—
Benefits paid		(29	)		(40	)		(11	)		(13	)
Company contributions		5			5			9			11
Participants contributions		—			—			2			2
Exchange rate gain (loss)		6			(13	)		—			—
Settlements		(11	)		(2	)		—			—
Fair value of plan assets at end of year	$	568		$	517		$	—		$	—
Funded status	$	(32	)	$	(58	)	$	(53	)	$	(45	)

Accumulated benefit obligation at end of year	$	597		$	572

Liabilities associated with the funded status of the defined benefit pension plans are included in the balances of accrued liabilities and other liabilities in the Consolidated Balance Sheet.

Defined Benefit Pension Plans

Assumed long-term rates of return on plan assets, discount rates and rates of compensation increases vary for the different plans according to the local economic conditions. The assumption rates used for benefit obligations are as follows:

	Years Ended December 31,
	2019	2018
Discount rate:
United States plan	2.50% - 3.20%	3.90% - 4.20%
International plans	0.90% - 2.30%	1.80% - 2.90%
Salary increase:
United States plan	N/A	N/A
International plans	1.80% - 3.10%	1.80% - 3.40%

The assumption rates used for net periodic benefit costs are as follows:

	Years Ended December 31,
	2019	2018	2017
Discount rate:
United States plan	3.90% - 4.20%	3.00% - 3.60%	3.10% - 4.00%
International plans	1.80% - 2.90%	1.80% - 2.40%	1.80% - 2.80%
Salary increase:
United States plan	N/A	N/A	N/A
International plans	1.80% - 3.40%	1.80% - 3.30%	1.80% - 3.50%
Expected return on assets:
United States plan	5.70%	5.60%	5.60%
International plans	1.90% - 4.30%	1.80% - 4.00%	1.80% - 3.00%

In determining the overall expected long-term rate of return for plan assets, the Company takes into consideration the historical experience as well as future expectations of the asset mix involved. As different investments yield different returns, each asset category is reviewed individually and then weighted for significance in relation to the total portfolio.

The majority of our plans have projected benefit obligations in excess of plan assets.

The Company expects to pay future benefit amounts on its defined benefit plans of approximately $32 million for each of the next five years and aggregate payments of $317 million.

Plan Assets

The Company and its investment advisers collaboratively reviewed market opportunities using historic and statistical data, as well as the actuarial valuation reports for the plans, to ensure that the levels of acceptable return and risk are well-defined and monitored. Currently, the Company’s management believes that there are no significant concentrations of risk associated with plan assets. Our pension investment strategy worldwide prohibits a direct investment in our own stock.

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets carried at fair value (in millions):

	Fair Value Measurements
	Total		Level 1		Level 2		Level 3
December 31, 2018:
Equity securities	$	140	$	—	$	140	$	—
Bonds		209		—		209		—
Other (insurance contracts)		168		—		113		55
Total Fair Value Measurements	$	517	$	—	$	462	$	55
December 31, 2019:
Equity securities	$	157	$	—	$	157	$	—
Bonds		227		—		227		—
Other (insurance contracts)		184		—		121		63
Total Fair Value Measurements	$	568	$	—	$	505	$	63

Level 3 inputs are unobservable (i.e., supported by little or no market activity). Level 3 inputs include management’s own judgement about the assumptions that market participants would use in pricing the asset or liability (including assumptions about risk). The following table sets forth a summary of changes in the fair value of the Plan’s Level 3 assets (in millions):

	Level 3 Plan Assets
Balance at December 31, 2017	$	61
Actual return on plan assets still held at reporting date		(1	)
Purchases, sales and settlements		(2	)
Currency translation adjustments		(3	)
Balance at December 31, 2018	$	55
Actual return on plan assets still held at reporting date		10
Purchases, sales and settlements		(1	)
Currency translation adjustments		(1	)
Balance at December 31, 2019	$	63

Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

11. Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) are as follows (in millions):

				Derivative			Defined
	Currency			Financial			Benefit
	Translation			Instruments,			Plans,
	Adjustments			Net of Tax			Net of Tax			Total
Balance at December 31, 2016	$	(1,376	)	$	(39	)	$	(37	)	$	(1,452	)
Accumulated other comprehensive income (loss) before reclassifications		272			41			25			338
Amounts reclassified from accumulated other comprehensive income (loss)		—			5			(1	)		4
Balance at December 31, 2017	$	(1,104	)	$	7		$	(13	)	$	(1,110	)
Accumulated other comprehensive income (loss) before reclassifications		(298	)		(19	)		(13	)		(330	)
Amounts reclassified from accumulated other comprehensive income (loss)		6			(2	)		(1	)		3
Balance at December 31, 2018	$	(1,396	)	$	(14	)	$	(27	)	$	(1,437	)
Accumulated other comprehensive income (loss) before reclassifications		(7	)		(2	)		12			3
Amounts reclassified from accumulated other comprehensive income (loss)		—			12			(1	)		11
Balance at December 31, 2019	$	(1,403	)	$	(4	)	$	(16	)	$	(1,423	)

The components of amounts reclassified from accumulated other comprehensive income (loss) are as follows (in millions):

	Years Ended December 31,
	2019											2018											2017
	Currency		Derivative			Defined						Currency		Derivative			Defined						Currency		Derivative			Defined
	Translation		Financial			Benefit						Translation		Financial			Benefit						Translation		Financial			Benefit
	Adjustments		Instruments			Plans			Total			Adjustments		Instruments			Plans			Total			Adjustments		Instruments			Plans			Total
Revenue	$	—	$	1		$	—		$	1		$	—	$	2		$	—			2		$	—	$	(8	)	$	—		$	(8	)
Cost of revenue		—		14			—			14			—		(6	)		—			(6	)		—		12			—			12
Selling, general, and administrative		—		—			(1	)		(1	)		—		—			(1	)		(1	)		—		—			(1	)		(1	)
Other income (expense), net		—		—			—			-			6		—			—			6			—		—			—			—
Tax effect		—		(3	)		—			(3	)		—		2			—			2			—		1			-			1
	$	—	$	12		$	(1	)	$	11		$	6	$	(2	)	$	(1	)	$	3		$	—	$	5		$	(1	)	$	4

The Company’s reporting currency is the U.S. dollar. A majority of the Company’s international entities in which there is a substantial investment have the local currency as their functional currency. As a result, currency translation adjustments resulting from the process of translating the entities’ financial statements into the reporting currency are reported in other comprehensive income or (loss). The Company recorded other comprehensive income (loss) of ($7) million, $(292) million and $272 million for the years ended December 31, 2019, 2018 and 2017, respectively.

The effect of changes in the fair values of derivatives designated as cash flow hedges are accumulated in other comprehensive income (loss), net of tax, until the underlying transactions are realized. The movement in other comprehensive income (loss) from period to period will be the result of the combination of changes in fair value of open derivatives and the outflow of other comprehensive income (loss) related to cumulative changes in the fair value of derivatives that have settled in the current period. The accumulated effect was other comprehensive loss of $10 million (net of $4 million tax), $21 million (net of $2 million tax) and $46 million (net of $13 million tax) for the years ended December 31, 2019, 2018 and 2017.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2019

Commitments And Contingencies Disclosure Abstract

Commitments and Contingencies

12. Commitments and Contingencies

Our business is governed by laws and regulations promulgated by U.S. federal and state governments and regulatory agencies, as well as international governmental authorities in the many countries in which we conduct business, including those related to the oilfield service industry. In the United States these governmental authorities include: the U.S. Department of Labor, the Occupational Safety and Health Administration (“OSHA”), the Environmental Protection Agency, the Bureau of Land Management, the Department of Treasury, Office of Foreign Asset Controls, state and international environmental agencies and many others. We are unaware of any material unreserved liabilities in connection with our compliance with such laws. New laws, regulations and enforcement policies may result in additional, presently unquantifiable or unknown, costs or liabilities.

The Company is involved in various claims, regulatory agency audits and pending or threatened legal actions involving a variety of matters. The Company maintains insurance that covers many of the claims arising from risks associated with the business activities of the Company, including claims for premises liability, product liability and other such claims. The Company carries substantial insurance to cover such risks above a self-insured retention. The Company believes, and the Company’s experience has been, that such insurance has been sufficient to cover such risks. See Item 1A. Risk Factors.

The Company is also a party to claims, threatened and actual litigation, private arbitration, internal investigations of potential regulatory and compliance matters arising from ordinary day-to-day business activities in which parties, including government authorities, assert claims against the Company for a broad spectrum of potential claims and theories of liability, including: individual employment law claims, collective actions or class actions under employment laws, intellectual property claims, (such as alleged patent infringement, and/or misappropriation of trade secrets), premises liability claims, environmental, product liability claims, warranty claims, personal injury claims arising from allegedly defective products, negligence or other theories of liability, alleged regulatory violations, alleged violations of anti-corruption and anti-bribery laws and other commercial claims seeking recovery for alleged actual or exemplary damages or fines and penalties. For some contingent claims, the Company’s insurance coverage is inapplicable or an exclusion to coverage may apply. In such instances, settlement or other resolution of such contingent claims could have a material financial or reputational impact on the Company.

The Company is exposed to customs and regulatory risk in the countries in which we do business or to which we transport goods. For example, the effects of the United Kingdom’s withdrawal from the European Union, known as Brexit, may have a negative impact on our results from operations. Uncertainty concerning the legal and regulatory risks of Brexit, include: (i) supply chain risks resulting from lack of trade agreements, potential changes in customs administrations or tariffs; (ii) revenue risk, loss of customers or increased costs; (iii) delays in delivery of materials to the Company or delay in delivery by the Company; and (iv) the need for renegotiation of agreements; and other business disruptions. In addition, trade regulations and laws may adversely impact our ability to do business in certain countries, e.g.: Iran, Syria, Russia and Venezuela. Such trade regulations can be complex and present compliance challenges which could result in future liabilities.

As of December 31, 2019, the Company recorded reserves in an amount believed to be sufficient, given the range of potential outcomes, for contingent liabilities representing all contingencies believed to be probable. These reserves include all costs expected for reclamation of a closed barite mine and costs arising out of personal injury claims arising from a well blow out in McAlester, Oklahoma for which the Company supplied the mud engineer, as well as other circumstances involving material claims.

The Company has assessed the potential for additional losses above the amounts accrued as well as potential losses for matters that are not probable but are reasonably possible. The litigation process as well as the final outcome of regulatory oversight is inherently uncertain, and our best judgement concerning the probable outcome of litigation or regulatory enforcement matters may prove to be incorrect in some instances. The total potential loss on these matters cannot be determined; however, in our opinion, any ultimate liability, to the extent not otherwise provided for, will not materially affect our financial position, cash flow or results of operations. These estimated liabilities are based on the Company’s assessment of the nature of these matters, their progress toward resolution, the advice of legal counsel and outside experts as well as management’s experience. Of course, because of uncertainty and risk inherent to litigation and arbitration, the actual liabilities incurred may exceed our estimated liabilities and reserves, which could have a material financial or reputational impact on the Company. In many instances, the Company’s products and services embody or incorporate trade secrets or patented inventions. From time to time, we are engaged in disputes concerning protection of trade secrets and confidential information, patents and other intellectual property rights. Such disputes frequently involve complex, factual, technical and/or legal issues which result in high costs to adjudicate our rights and difficulty in predicting the ultimate outcome. Because of the importance of the Company’s intellectual property to the Company’s performance, an adverse result in such disputes could materially and adversely impact our financial performance.

Further, in some instances, direct or indirect consumers of our products and services, entities providing financing for purchases of our products and services or members of the supply chain for our products and services have become involved in governmental investigations, internal investigations, political or other enforcement matters. In such circumstances, such investigations may adversely impact the ability of consumers of our products, entities providing financial support to such consumers or entities in the supply chain to timely perform their business plans or to timely perform under agreements with us. We may, from time to time, become involved in these investigations, at substantial cost to the Company. We also are subject to trade regulations and other regulatory compliance in which the laws and regulations of different jurisdictions conflict or trade regulations may conflict with contractual terms. In such circumstances, our compliance with U.S. laws and regulations may subject us to risk of fines, penalties or contractual liability in other jurisdictions. Our efforts to actively manage such risks may not always be successful which could lead to negative impacts on revenue or earnings.

Common Stock

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Common Stock

13. Common Stock

National Oilwell Varco has authorized 1 billion shares of $0.01 par value common stock. The Company also has authorized 10 million shares of $0.01 par value preferred stock, none of which is issued or outstanding.

Cash dividends aggregated $77 million and $76 million for the years ended December 31, 2019 and 2018, respectively. The declaration and payment of future dividends is at the discretion of the Company’s Board of Directors and will be dependent upon the Company’s results of operations, financial condition, capital requirements and other factors deemed relevant by the Company’s Board of Directors.

Total compensation cost that has been charged against income for all share-based compensation arrangements was $130 million, $110 million and $124 million for 2019, 2018 and 2017, respectively. The total income tax benefit recognized in the consolidated statements of income for all share-based compensation arrangements was $14 million, $16 million and $24 million for 2019, 2018 and 2017, respectively.

The Company’s stock-based compensation plan, known as the National Oilwell Varco, Inc. 2018 Long-Term Incentive Plan (the “2018 Plan”), was approved by shareholders on May 11, 2018. The 2018 Plan provides for the granting of stock options, restricted stock, restricted stock units, performance awards, phantom shares, stock appreciation rights, stock payments and substitute awards. The number of shares authorized under the 2018 Plan is 20.2 million. The 2018 Plan is also subject to a fungible ratio concept, such that the issuance of stock options and stock appreciation rights reduces the number of available shares under the 2015 Plan on a 1-for-1 basis, and the issuance of other awards reduces the number of available shares under the 2018 Plan on a 2.5-for-1 basis. At December 31, 2019, approximately 10.5 million shares were available for future grants.

The Company also has outstanding awards under its other stock-based compensation plan known as the National Oilwell Varco, Inc. Long-Term Incentive Plan (the “Plan”), however the Company is no longer granting awards under the Plan. The Plan provides for the granting of stock options, performance-based share awards, restricted stock, phantom shares, stock payments and stock appreciation rights (“SARs”). The number of shares authorized under the Plan is 69.4 million. The Plan is subject to a fungible ratio concept, such that the issuance of stock options and SARs reduces the number of available shares under the Plan on a 1-for-1 basis, and the issuance of other awards reduces the number of available shares under the Plan on a 3-for-1 basis.

Stock Options

Options granted under our stock-based compensation plans generally vest over a three-year period starting one year from the date of grant and expire ten years from the date of grant. The purchase price of options granted may not be less than the closing market price of National Oilwell Varco common stock on the date of grant.

We converted the outstanding stock options under this plan to options to acquire our common stock and no further options are being issued under the plans. Stock option information summarized below includes amounts for the National Oilwell Varco Long-Term Incentive Plans and stock plans of acquired companies. Options outstanding at December 31, 2019 under the stock option plans have exercise prices between $28.24 and $77.99 per share, and expire at various dates from February 17, 2020 to February 28, 2029.

The following summarizes options activity:

	Years Ended December 31,
	2019					2018					2017
	Number			Average		Number			Average		Number			Average
	of			Exercise		of			Exercise		of			Exercise
	Shares			Price		Shares			Price		Shares			Price
Shares under option at beginning of year		21,009,508		$	48.88		22,472,047		$	48.99		17,439,060		$	54.08
Granted		1,493,576			28.72		1,610,599			35.09		6,961,041			36.51
Forfeited		(944,917	)		50.57		(1,318,380	)		57.56		(1,482,531	)		55.22
Exercised		(248,068	)		29.70		(1,754,758	)		44.12		(445,523	)		29.83
Shares under option at end of year		21,310,099		$	47.68		21,009,508		$	48.88		22,472,047		$	48.99
Exercisable at end of year		17,796,607		$	50.49		15,223,029		$	54.13		14,309,944		$	55.00

The following summarizes information about stock options outstanding at December 31, 2019:

	Weighted-Avg		Options Outstanding				Options Exercisable
	Remaining				Weighted-Avg				Weighted-Avg
Range of Exercise Price	Contractual Life		Shares		Exercise Price		Shares		Exercise Price
$28.24 - $55.00		6.21		15,776,394	$	39.77		12,262,902	$	41.58
$55.01 - $70.00		3.65		3,480,067		66.82		3,480,067		66.82
$70.01 - $77.99		1.68		2,053,638		75.96		2,053,638		75.96
Total		5.36		21,310,099	$	47.68		17,796,607	$	50.49

The weighted-average fair value of options granted during 2019, 2018 and 2017, was approximately $9.06, $10.01 and $9.68 per share, respectively, as determined using the Black-Scholes option-pricing model. The total intrinsic value of options exercised during 2019 and 2018 was $6 million and $54 million, respectively.

The determination of fair value of share-based payment awards on the date of grant using an option-pricing model is affected by our stock price as well as assumptions regarding a number of highly complex and subjective variables. These variables include, but are not limited to, the expected stock price volatility over the term of the awards, and actual and projected employee stock option exercise activity. The use of the Black Scholes model requires the use of actual employee exercise activity data and the use of a number of complex assumptions including expected volatility, risk-free interest rate, expected dividends and expected term.

	Years Ended December 31,
Valuation Assumptions:	2019			2018			2017
Expected volatility		35.9	%		31.8	%		36.1	%
Risk-free interest rate		2.5	%		2.7	%		2.2	%
Expected dividend yield		0.7	%		0.6	%		0.6	%
Expected term (in years)		4.5			4.3			3.0

The Company used the actual volatility for traded options for the past 10 years prior to option date as the expected volatility assumption required in the Black Scholes model.

The risk-free interest rate assumption is based upon observed interest rates appropriate for the term of our employee stock options. The dividend yield assumption is based on the history and expectation of dividend payouts. The estimated expected term is based on actual employee exercise activity for the past ten years. Forfeitures are accounted for as they occur.

The following summary presents information regarding outstanding options at December 31, 2019 and changes during 2019 with regard to options under all stock option plans:

				Weighted- Average		Weighted Average Remaining Contractual		Aggregate
	Shares			Exercise Price		Term (years)		Intrinsic Value
Outstanding at December 31, 2018		21,009,508		$	48.88		6.01	$	458,576
Granted		1,493,576		$	28.72
Forfeited		(944,917	)	$	50.57
Exercised		(248,068	)	$	29.70
Outstanding at December 31, 2019		21,310,099		$	47.68		5.36	$	—
Exercisable at December 31, 2019		17,796,607		$	50.49		4.44	$	—

At December 31, 2019, total unrecognized compensation cost related to nonvested stock options was $17 million. This cost is expected to be recognized over a weighted-average period of three years. The total fair value of stock options vested in 2019, 2018 and 2017 was approximately $32 million, $26 million and $70 million, respectively. Cash received from option exercises for 2019, 2018 and 2017 was $7 million, $54 million and $13 million, respectively. The actual tax benefit (expense) realized for the tax deductions from option exercises totaled $(2) million, $2 million, and $(2) million for 2019, 2018 and 2017, respectively.

Stock Appreciation Rights

On December 20, 2017, the Company made a tender offer to exchange SARs issued to certain employees on February 24, 2016 (“2016 SARs”) for cash, amended SARs, and new stock options. The transaction was structured to provide the employees an equal long-term incentive compensation value, while alleviating volatility in the Company’s earnings caused by required mark-to-market accounting on outstanding SARS. Of the outstanding 2016 SARs, 94.75% were exchanged resulting in a total cash payment of $14 million and granting of 3,613,707 new stock options on the exchange date with an exercise price of $34.32 and a fair value of $8.47, with vesting matched to the exchanged 2016 SARs.

The following summary presents information regarding outstanding SARs:

	Year Ended December 31,
	2019					2018
	Number			Average		Number			Average
	of			Exercise		of			Exercise
	Shares			Price		Shares			Price
Shares under SARs at beginning of year		1,399,302		$	28.49		1,493,689		$	28.41
Granted		7,088			28.72		14,228			35.09
Forfeited		(76,133	)		29.18		(83,124	)		28.32
Exercised		—			—		(25,491	)		42.61
Shares under SARs at end of year		1,330,257		$	28.45		1,399,302		$	28.49
Exercisable at end of year		1,315,701		$	28.40		165,755		$	28.57

The Company recognized no expense in 2019 and 2018, compared to $8 million in 2017. There was no liability for cash-settled SARs at December 31, 2019.

Restricted Shares

The Company issues restricted stock awards and restricted stock units to officers and key employees in addition to stock options. On February 27, 2019, the Company granted 2,895,086 shares of restricted stock and restricted stock units with a fair value of $28.72 per share; and performance share awards to senior management employees with potential payouts varying from zero to 665,740 shares. The restricted stock and restricted stock units vest in three equal annual installments commencing on the first anniversary of the date of grant. The performance share awards can be earned based on performance against established goals over a three-year performance period. The 2017 and 2018 performance share awards are based entirely on a TSR (total shareholder return) goal. Performance against the TSR goal is determined by comparing the performance of the Company’s TSR with the TSR performance of the members of the OSX (Oil Service Sector) index for the three-year performance period. The 2019 performance share awards are divided into two independent parts that are subject to two separate performance metrics: 85% with a TSR (total shareholder return) goal and 15% with an internal National Oilwell Varco Value Added (“NVA”) (return on capital metric) goal. Performance against the TSR goal is determined by comparing the performance of the Company’s TSR with the TSR performance of the members of the OSX index for the three-year performance period. The NVA goal is based on the Company’s improvement in NVA from the beginning of the performance period until the end of the performance period. NVA shall be calculated as an amount equal to the Company’s (a) gross cash earnings less (b) average gross operating assets times an amount equal to a required return on assets.

On May 28, 2019, the Company granted 65,752 restricted stock awards with a fair value of $21.90 per share. The awards were granted to non-employee members of the board of directors and vest on the first anniversary of the grant date.

The following summary presents information regarding outstanding restricted shares:

	Years Ended December 31,
	2019					2018					2017
				Weighted-					Weighted-					Weighted-
	Number			Average		Number			Average		Number			Average
	of			Grant Date		of			Grant Date		of			Grant Date
	Units			Fair Value		Units			Fair Value		Units			Fair Value
Nonvested at beginning of year		5,914,860		$	34.41		4,889,678		$	37.04		4,563,983		$	41.10
Granted		3,335,315		$	28.52		2,657,115		$	35.17		1,738,589		$	38.74
Vested		(2,901,945	)	$	25.67		(1,242,682	)	$	34.86		(1,018,206	)	$	34.84
Forfeited		(73,922	)	$	50.57		(389,251	)	$	57.56		(394,688	)	$	55.22
Nonvested at end of year		6,274,308		$	33.10		5,914,860		$	34.41		4,889,678		$	37.04

At December 31, 2019, there was approximately $102 million of unrecognized compensation cost related to nonvested restricted stock awards and restricted stock units, which is expected to be recognized over a weighted-average period of two years.

Revenue Recognition

12 Months Ended

Dec. 31, 2019

Revenue From Contract With Customer [Abstract]

Revenue Recognition

14.

Revenue

Disaggregation of Revenue

The following tables disaggregate our revenue by destinations, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. In the tables below, North America includes only the U.S. and Canada (in millions):

	Year Ended December 31, 2019
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,710	$	1,122	$	529	$	—		$	3,361
International		1,441		1,590		2,087		—			5,118
Eliminations		63		59		66		(188	)		—
	$	3,214	$	2,771	$	2,682	$	(188	)	$	8,479

Land	$	2,531	$	1,808	$	758	$	—		$	5,097
Offshore		620		904		1,858		—			3,382
Eliminations		63		59		66		(188	)		—
	$	3,214	$	2,771	$	2,682	$	(188	)	$	8,479

	Year Ended December 31, 2018
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,817	$	1,302	$	663	$	—		$	3,782
International		1,345		1,543		1,783		—			4,671
Eliminations		73		86		129		(288	)		—
	$	3,235	$	2,931	$	2,575	$	(288	)	$	8,453

Land	$	2,683	$	1,985	$	854	$	—		$	5,522
Offshore		479		860		1,592		—			2,931
Eliminations		73		86		129		(288	)		—
	$	3,235	$	2,931	$	2,575	$	(288	)	$	8,453

	Year Ended December 31, 2017
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,408	$	1,093	$	545	$	—		$	3,046
International		1,116		1,528		1,614		—			4,258
Eliminations		53		51		93		(197	)		—
	$	2,577	$	2,672	$	2,252	$	(197	)	$	7,304

Land	$	2,047	$	1,752	$	740	$	—		$	4,539
Offshore		477		869		1,419		—			2,765
Eliminations		53		51		93		(197	)		—
	$	2,577	$	2,672	$	2,252	$	(197	)	$	7,304

The Company did not have any customers with revenues greater than 10% of total revenue for the years ended December 31, 2019, 2018, or 2017.

Contract Assets and Liabilities

Contract assets include unbilled amounts resulting from sales under long-term contracts when the cost-to-cost method of revenue recognition is utilized and revenue recognized exceeds the amount billed to the customer, and right to payment is not only subject to the passage of time. There were no impairment losses recorded on contract assets for the years ending December 31, 2019, 2018 and 2017.

Contract liabilities consist of advance payments, billings in excess of revenue recognized and deferred revenue.

The changes in the carrying amount of contract assets and contract liabilities are as follows (in millions):

Contract Assets
Balance at December 31, 2018	$	565
Additions and Milestone Billings		(1,018	)
Revenue Recognized		1,131
Currency translation adjustments and other		(35	)
Balance at December 31, 2019	$	643

Contract Liabilities
Balance at December 31, 2018	$	458
Additions and Milestone Billings		809
Revenue Recognized		(782	)
Currency translation adjustments and other		(58	)
Balance at December 31, 2019	$	427

Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

15. Income Taxes

The domestic and foreign components of income (loss) before income taxes were as follows (in millions):

	Years Ended December 31,
	2019			2018			2017
Domestic	$	(4,501	)	$	(168	)	$	(470	)
Foreign		(1,961	)		209			78
	$	(6,462	)	$	41		$	(392	)

The components of the provision for income taxes consisted of (in millions):

	Years Ended December 31,
	2019			2018			2017
Current:
Federal	$	(7	)	$	(5	)	$	23
State		4			(3	)		1
Foreign		60			134			161
Total current income tax provision		57			126			185
Deferred:
Federal		(344	)		11			(332	)
State		(18	)		-			(2	)
Foreign		(64	)		(74	)		(7	)
Total deferred income tax provision		(426	)		(63	)		(341	)
Total income tax provision	$	(369	)	$	63		$	(156	)

The difference between the effective tax rate reflected in the provision for income taxes and the U.S. federal statutory rate was as follows (in millions):

	Years Ended December 31,
	2019			2018			2017
Federal income tax at U.S. statutory rate	$	(1,357	)	$	9		$	(137	)
Foreign income tax rate differential		(40	)		(3	)		(21	)
Goodwill impairment		666			—			—
Nondeductible expenses		61			20			38
Foreign dividends, net of foreign tax credits		163			27			(132	)
Tax rate change on timing differences		1			(7	)		(245	)
Change in uncertain tax positions		(60	)		(5	)		81
Prior years taxes		3			(13	)		(26	)
Tax impact on foreign exchange		(2	)		(3	)		5
Change in deferred tax valuation allowance		218			49			280
State income taxes - net of federal benefit		(16	)		(3	)		(1	)
Tax exempt income		(6	)		(5	)		—
Income tax credits		—			(3	)		(4	)
Other		—			—			6
Total income tax provision	$	(369	)	$	63		$	(156	)

The effective tax rate for the year ended December 31, 2019 was 5.7%, compared to 153.7% for 2018. For the year ended December 31, 2019, the effective tax rate was negatively impacted by the impairment of nondeductible goodwill and the establishment of additional valuation allowance partially offset by the reduction in uncertain tax positions due to settlements. For the year ended December 31, 2018, valuation allowances established on foreign tax credits generated during the year resulted in a higher effective tax rate than the U.S. statutory rate.

Significant components of our deferred tax assets and liabilities were as follows (in millions):

	December 31,
	2019			2018
Deferred tax assets:
Allowances and operating liabilities	$	395		$	293
Net operating loss carryforwards		270			182
Stock Compensation		69			66
Tax credit carryforwards		702			768
Other		60			59
Valuation allowance		(1,175	)		(955	)
Total deferred tax assets		321			413
Deferred tax liabilities:
Tax over book depreciation		115			139
Capital leases		86			-
Intangible assets		110			688
Deferred income		65			70
Accrued tax on unremitted earnings		33			17
Other		52			52
Total deferred tax liabilities		461			966
Net deferred tax liability	$	140		$	553

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):

	2019			2018			2017
Unrecognized tax benefit at beginning of year	$	98		$	132		$	78
Gross increase for current period tax positions		—			15			10
Gross increase for tax positions in prior years		10			31			64
Gross decrease for tax positions in prior years		(60	)		(10	)		(14	)
Cash Settlements		(3	)		(69	)		—
Lapse of statute of limitations		(7	)		(1	)		(6	)
Unrecognized tax benefit at end of year	$	38		$	98		$	132

The balance of unrecognized tax benefits at December 31, 2019, 2018 and 2017 was $38 million, $98 million and $132 million, respectively. Resolutions of foreign jurisdiction audits resulted in a $60 million and $74 million decrease in uncertain tax provisions for the years ended December 31, 2019 and 2018, respectively. Accruals related to foreign jurisdiction audits of prior years resulted in uncertain tax position increases of $64 million in 2017.

Substantially all of the unrecognized tax benefits, if ultimately realized, would be recorded as a benefit to the effective tax rate. The Company anticipates that it is reasonably possible that the amount of unrecognized tax benefits may decrease by up to $21 million in the next twelve months due to settlements and conclusions of tax examinations. To the extent penalties and interest would be assessed on any underpayment of income tax, such accrued amounts have been classified as a component of income tax expense in the financial statements consistent with the Company’s policy. For the years ended December 31, 2019, 2018 and 2017, we recorded income tax expense of nil, nil and $17 million, respectively, for interest and penalty related to unrecognized tax benefits. As of December 31, 2019 and 2018, the Company had accrued $11 million and $12 million, respectively, of interest and penalty relating to unrecognized tax benefits.

The Company is subject to taxation in the United States as well as various states and foreign jurisdictions. The Company has significant operations in the United States, Norway, Canada, the United Kingdom, the Netherlands, France and Denmark. Tax years that remain subject to examination by major tax jurisdictions vary by legal entity, but are generally open in the U.S. for tax years ending after 2013 and outside the U.S. for tax years ending after 2014.

Net operating loss carryforwards by jurisdiction and expiration as of December 31, 2019 were as follows (in millions):

	Federal			State			Foreign			Total
2020 - 2024 Expiration	$	6		$	4		$	73		$	83
2025 - 2039 Expiration		30			150			346			526
Unlimited Expiration		198			—			406			604
Total Net Operating Loss (NOL)	$	234		$	154		$	825		$	1,213
Tax Effected NOL	$	49		$	9		$	212			270
Valuation Allowance (VA)		(49	)		(9	)		(211	)		(269	)
Tax Effected NOL Net of VA	$	—		$	—		$	1		$	1

The Company has $702 million of excess foreign tax credits in the United States as of December 31, 2019, of which $11 million, $141 million, $285 million, $142 million, $88 million and $35 million will expire in 2020, 2022, 2026, 2027, 2028 and 2029, respectively. As of December 31, 2018, the Company has remaining tax-deductible goodwill of $194 million, resulting from acquisitions. The amortization of this goodwill is deductible over various periods ranging up to 12 years.

Undistributed earnings of certain of the Company’s foreign subsidiaries amounted to $757 million at December 31, 2019. These earnings are considered to be indefinitely reinvested and no provision for U.S. federal and state income taxes has been made. Distribution of these earnings in the form of dividends or otherwise could result in incremental U.S. federal and state taxes at statutory rates and withholding taxes payable in various foreign countries.

Business Segments and Geographic Areas

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Business Segments and Geographic Areas

16. Business Segments. and Geographic Areas

The Company’s operations are organized into three operating segments: Wellbore Technologies, Completion & Production Solutions and Rig Technologies.

Wellbore Technologies

The Company’s Wellbore Technologies segment designs, manufactures, rents, and sells a variety of equipment and technologies used to perform drilling operations, and offers services that optimize their performance, including: solids control and waste management equipment and services; portable power generation; drill pipe; wired pipe; drilling optimization and automation services; tubular inspection, repair and coating services; instrumentation; measuring and monitoring; downhole and fishing tools; steerable technologies; and drill bits.

Wellbore Technologies focuses on oil and gas companies and supports drilling contractors, oilfield service companies, and oilfield equipment rental companies. Demand for the segment’s products and services depends on the level of oilfield drilling activity by oil and gas companies, drilling contractors, and oilfield service companies.

Completion & Production Solutions

The Company’s Completion & Production Solutions segment integrates technologies for well completions and oil and gas production. The segment designs, manufactures, and sells equipment and technologies needed for hydraulic fracture stimulation, including pressure pumping trucks, blenders, sanders, hydration units, injection units, flowline, and manifolds; well intervention, including coiled tubing units, coiled tubing, and wireline units, BOPs, and tools; onshore production, including fluid processing systems, composite pipe, surface transfer and progressive cavity pumps, and artificial lift systems; and, offshore production, including fluid processing systems, floating production systems, subsea production technologies, and connectors for conductor pipe.

Completion & Production Solutions supports service companies and oil and gas companies. Demand for the segment’s products depends on the level of oilfield completions and workover activity by oilfield service companies and drilling contractors, and capital spending plans by oil and gas companies and oilfield service companies.

Rig Technologies

The Company’s Rig Technologies segment makes and supports the capital equipment and integrated systems needed to drill oil and gas wells on land and offshore as well as other marine-based markets, including offshore wind vessels. The segment designs, manufactures and sells land rigs, offshore drilling equipment packages, including installation and commissioning services, and drilling rig components that mechanize and automate the drilling process and rig functionality. Equipment and technologies in Rig Technologies include: substructures, derricks, and masts; cranes; jacking systems; pipe lifting, racking, rotating, and assembly systems; fluid transfer technologies, such as mud pumps; pressure control equipment, including blowout preventers; power transmission systems, including drives and generators; rig instrumentation and control systems; mooring, anchor, and deck handling machinery; major equipment components for offshore wind construction vessels; and pipelay and construction systems. The segment also provides spare parts, repair, and rentals as well as comprehensive remote equipment monitoring, technical support, field service, and customer training through an extensive network of aftermarket service and repair facilities strategically located in major areas of drilling operations around the world.

Rig Technologies supports land and offshore drillers. Demand for the segment’s products depends on drilling contractors’ and oil and gas companies’ capital spending plans, specifically capital expenditures on rig construction and refurbishment; and secondarily on the overall level of oilfield drilling activity, which drives demand for spare parts, service, and repair for the segment’s large installed base of equipment.

Geographic Areas:

The following table presents consolidated revenues by country based on sales destination of the products or services (in millions):

	Years Ended December 31,
	2019		2018		2017
United States	$	3,112	$	3,480	$	2,760
Norway		512		368		295
Singapore		473		321		188
Saudi Arabia		436		444		310
United Kingdom		333		309		279
China		285		231		298
Brazil		269		415		498
Canada		247		302		286
United Arab Emirates		224		248		223
South Korea		69		169		261
Other Countries		2,519		2,166		1,906
Total	$	8,479	$	8,453	$	7,304

The following table presents plant, property and equipment by country based on the location (in millions):

	December 31,
	2019		2018
United States	$	1,257	$	1,603
Brazil		194		217
United Kingdom		112		125
Denmark		111		119
South Korea		77		91
Canada		77		79
United Arab Emirates		52		60
Mexico		43		48
Singapore		28		47
Russia		16		69
Other Countries		387		339
Total	$	2,354	$	2,797

Business Segments:

The following table presents selected financial data by business segment (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Eliminations and corporate costs (1)			Total
December 31, 2019
Revenue	$	3,214		$	2,771		$	2,682		$	(188	)	$	8,479
Operating profit (loss)⁽²⁾		(3,551	)		(1,934	)		(524	)		(270	)		(6,279	)
Capital expenditures		123			64			31			15			233
Depreciation and amortization		284			150			87			12			533
Goodwill		843			1,054			910			—			2,807
Total assets		4,078			3,826			3,758			1,487			13,149
December 31, 2018
Revenue	$	3,235		$	2,931		$	2,575		$	(288	)	$	8,453
Operating profit (loss)⁽²⁾		131			166			213			(299	)		211
Capital expenditures		135			87			17			5			244
Depreciation and amortization		374			212			90			14			690
Goodwill		3,011			2,041			1,212			—			6,264
Total assets		7,929			6,233			3,906			1,728			19,796
December 31, 2017
Revenue	$	2,577		$	2,672		$	2,252		$	(197	)	$	7,304
Operating profit (loss)⁽²⁾		(102	)		98			(14	)		(259	)		(277	)
Capital expenditures		99			69			16			8			192
Depreciation and amortization		379			215			88			16			698
Goodwill		2,956			2,122			1,149			—			6,227
Total assets		7,848			5,782			4,625			1,951			20,206

(1)

Sales from one segment to another generally are priced at estimated equivalent commercial selling prices; however, segments originating an external sale are credited with the full profit to the Company. Eliminations and corporate costs include intercompany transactions conducted between the three reporting segments that are eliminated in consolidation, as well as corporate costs not allocated to the segments. Intercompany transactions within each reporting segment are eliminated within each reporting segment. Also included in the eliminations and corporate costs column are capital expenditures and total assets related to corporate. Corporate assets consist primarily of cash and fixed assets.

(2)

Segment operating loss for 2019 includes charges for: goodwill, other intangible asset and other long lived asset impairments (Wellbore Technologies $3,565 million; Completion and Production Solutions $1,865 million; and, Rig Technologies $389 million); inventory write-downs (Wellbore Technologies $130 million; Completion and Production Solutions $148 million; and, Rig Technologies $355 million); and a voluntary early retirement program (VERP), other severance and facility closure costs (Wellbore Technologies $64 million; Completion and Production Solutions $30 million; and, Rig Technologies $37 million). Segment operating profit for 2018 includes charges for facility closure (Wellbore Technologies $28 million) and non-operational credits (elimination and corporate costs ($18) million). Segment operating profit or loss for 2017 includes charges for: inventory write-downs (Wellbore Technologies $4 million; Completion and Production Solutions ($6) million; and Rig Technologies $110 million); and severance and facility closure costs (Wellbore Technologies $18 million; Completion and Production Solutions $32 million; and Rig Technologies $20 million).

Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

17. Quarterly Financial Data (Unaudited)

Summarized quarterly results, were as follows (in millions, except per share data):

	First			Second			Third			Fourth
	Quarter			Quarter			Quarter			Quarter
Year ended December 31, 2019
Revenue	$	1,940		$	2,132		$	2,126		$	2,281
Gross profit		256			62			151			376
Net profit (loss) attributable to Company		(77	)		(5,389	)		(244	)		(385	)
Net profit (loss) attributable to Company per basic share		(0.20	)		(14.11	)		(0.64	)		(1.01	)
Net profit (loss) attributable to Company per diluted share		(0.20	)		(14.11	)		(0.64	)		(1.01	)
Cash dividends per share		0.05			0.05			0.05			0.05
Year ended December 31, 2018
Revenue	$	1,795		$	2,106		$	2,154		$	2,398
Gross profit (loss)		287			355			393			409
Net profit (loss) attributable to Company		(68	)		24			1			12
Net profit (loss) attributable to Company per basic share		(0.18	)		0.06			0.00			0.03
Net profit (loss) attributable to Company per diluted share		(0.18	)		0.06			0.00			0.03
Cash dividends per share		0.05			0.05			0.05			0.05

Schedule II National Oilwell Varco, Inc. Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Valuation And Qualifying Accounts [Abstract]

Schedule II National Oilwell Varco, Inc. Valuation and Qualifying Accounts

SCHEDULE II

NATIONAL OILWELL VARCO, INC.

VALUATION AND QUALIFYING ACCOUNTS

Years Ended December 31, 2019, 2018 and 2017

(in millions)

	Balance beginning of year		Additions (Deductions) charged to costs and expenses		Charge off's and other			Balance end of year
Allowance for doubtful accounts:
2019	$	161	$	21	$	(50	)	$	132
2018		187		17		(43	)		161
2017		209		6		(28	)		187
Reserve for excess and obsolete inventories:
2019	$	644	$	659	$	(460	)	$	843
2018		800		49		(205	)		644
2017		1,017		114		(331	)		800
Valuation allowance for deferred tax assets:
2019	$	955	$	218	$	2		$	1,175
2018		1,202		49		(296	)		955
2017		544		280		378			1,202
Environmental accruals
2019	$	66	$	57	$	(19	)	$	104
2018		38		37		(9	)		66
2017		43		2		(7	)		38
Warranty reserve:
2019	$	105	$	41	$	(56	)	$	90
2018		135		38		(68	)		105
2017		172		46		(83	)		135

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Fair Value of Financial Instruments

Derivative Financial Instruments

Inventories

Property, Plant and Equipment

Lease Right-of-Use Assets

Acquisitions and Investments

Foreign Currency

Revenue Recognition, Service and Repair Work, and Costs to Obtain and Fulfill a Contract

Revenue Recognition

For revenue that is not recognized at a point in time, the Company follows accounting guidance for revenue recognized over time, as follows:

Revenue Recognition under Long-term Construction Contracts

Service and Repair Work

Costs to Obtain and Fulfill a Contract

Remaining Performance Obligations

Service and Product Warranties

The changes in the carrying amount of service and product warranties are as follows (in millions):

Balance at December 31, 2017	$	135
Net provisions for warranties issued during the year		38
Amounts incurred		(67	)
Currency translation adjustments		(1	)
Balance at December 31, 2018	$	105
Net provisions for warranties issued during the year		41
Amounts incurred		(56	)
Currency translation adjustments		—
Balance at December 31, 2019	$	90

Income Taxes

Concentration of Credit Risk

Stock-Based Compensation

The Company provides compensation benefits to employees and non-employee directors under share-based payment arrangements, including various employee stock option plans.

Environmental Liabilities

Use of Estimates

Contingencies

Net Loss Attributable to Company Per Share

The following table sets forth the computation of weighted average basic and diluted shares outstanding (in millions, except per share data):

	Years Ended December 31,
	2019			2018			2017
Numerator:
Net loss attributable to Company	$	(6,095	)	$	(31	)	$	(237	)
Denominator:
Basic—weighted average common shares outstanding		382			378			377
Dilutive effect of employee stock options and other unvested stock awards		—			—			—
Diluted outstanding shares		382			378			377
Basic loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Diluted loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Cash dividends per share	$	0.20		$	0.20		$	0.20

Recently Adopted and Issued Accounting Standards

Recently Adopted Accounting Standards

Recently Issued Accounting Standards

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Changes in Carrying Amount of Service and Product Warranties

The changes in the carrying amount of service and product warranties are as follows (in millions):

Balance at December 31, 2017	$	135
Net provisions for warranties issued during the year		38
Amounts incurred		(67	)
Currency translation adjustments		(1	)
Balance at December 31, 2018	$	105
Net provisions for warranties issued during the year		41
Amounts incurred		(56	)
Currency translation adjustments		—
Balance at December 31, 2019	$	90

Computation of Weighted Average Basic and Diluted Shares Outstanding

The following table sets forth the computation of weighted average basic and diluted shares outstanding (in millions, except per share data):

	Years Ended December 31,
	2019			2018			2017
Numerator:
Net loss attributable to Company	$	(6,095	)	$	(31	)	$	(237	)
Denominator:
Basic—weighted average common shares outstanding		382			378			377
Dilutive effect of employee stock options and other unvested stock awards		—			—			—
Diluted outstanding shares		382			378			377
Basic loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Diluted loss attributable to Company per share	$	(15.96	)	$	(0.08	)	$	(0.63	)
Cash dividends per share	$	0.20		$	0.20		$	0.20

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Outstanding Foreign Currency Forward Contracts

Forward currency contracts consist of (in millions):

Currency Denomination

Currency

December 31, 2019

December 31, 2018

South Korean Won

KRW

17,600

KRW

—

Norwegian Krone

NOK

5,377

NOK

5,229

Russian Ruble

RUB

1,012

RUB

—

U.S. Dollar

USD

686

USD

631

Euro

EUR

188

EUR

172

South African Rand

ZAR

124

ZAR

124

Mexican Peso

MXN

115

MXN

204

Singapore Dollar

SGD

—

Japanese Yen

JPY

121

Danish Krone

DKK

British Pound Sterling

GBP

Canadian Dollar

CAD

—

Derivative Instruments and their Balance Sheet Classifications

The Company has the following fair values of its derivative instruments and their balance sheet classifications (in millions):

	Fair Values of Derivative Instruments (In millions)
	Asset Derivatives					Liability Derivatives
		Fair Value					Fair Value
	Balance Sheet	December 31,				Balance Sheet	December 31,
	Location	2019		2018		Location	2019		2018
Derivatives designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	5	$	2	Accrued liabilities	$	18	$	17
Foreign exchange contracts	Other Assets		4		—	Other Liabilities		2		11
Total derivatives designated as hedging instruments under ASC Topic 815		$	9	$	2		$	20	$	28
Derivatives not designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	8	$	4	Accrued liabilities	$	6	$	6
Foreign exchange contracts	Other Assets		1		—	Other Liabilities		—		2
Total derivatives not designated as hedging instruments under ASC Topic 815		$	9	$	4		$	6	$	8
Total derivatives		$	18	$	6		$	26	$	36

Inventories, net (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Inventories

Inventories consist of (in millions):

	December 31,
	2019			2018
Raw materials and supplies	$	577		$	614
Work in process		364			501
Finished goods and purchased products		2,099			2,515
		3,040			3,630
Less: Inventory reserve		(843	)		(644	)
Total	$	2,197		$	2,986

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment consist of (in millions):

	Estimated	December 31,
	Useful Lives	2019			2018
Land		$	231		$	227
Buildings and improvements	5-35 Years		1,309			1,271
Operating equipment	2-20 Years		2,946			3,140
Rental equipment	2-15 Years		851			597
Capital leases			—			249
			5,337			5,484
Less: Accumulated Depreciation			(2,983	)		(2,687	)
		$	2,354		$	2,797

Asset Impairments (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill Identified, by Segment

The Company has approximately $2.8 billion of goodwill, by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2017	$	2,956		$	2,122		$	1,149		$	6,227
Goodwill acquired and adjusted during period		64			(33	)		71			102
Currency translation adjustments		(9	)		(48	)		(8	)		(65	)
Balance at December 31, 2018		3,011			2,041			1,212			6,264
Goodwill acquired and adjusted during period		9			40			13			62
Impairment		(2,178	)		(1,019	)		(312	)		(3,509	)
Currency translation adjustments		1			(8	)		(3	)		(10	)
Balance at December 31, 2019 (1)	$	843		$	1,054		$	910		$	2,807

(1)	Accumulated goodwill impairment was $5,966 million as of December 31, 2019.

Identified Intangible Assets, by Segment

The Company has approximately $852 million of identified intangible assets, by segment as follows (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Total
Balance at December 31, 2017	$	1,883		$	1,160		$	258		$	3,301
Additions to intangible assets		41			3			55			99
Amortization		(201	)		(111	)		(29	)		(341	)
Currency translation adjustments		12			(47	)		(4	)		(39	)
Balance at December 31, 2018	$	1,735		$	1,005		$	280		$	3,020
Impairment		(1,314	)		(690	)		—			(2,004	)
Additions to intangible assets		6			11			—			17
Amortization		(94	)		(56	)		(28	)		(178	)
Currency translation adjustments		(7	)		5			(1	)		(3	)
Balance at December 31, 2019	$	326		$	275		$	251		$	852

Identified Intangible Assets, by Major Classification

Identified intangible assets by major classification consist of the following (in millions):

	Gross		Accumulated Amortization			Net Book Value
December 31, 2018:
Customer relationships	$	4,078	$	(2,352	)	$	1,726
Trademarks		891		(341	)		550
Patents		661		(414	)		247
Indefinite-lived trade names		383		—			383
Other		491		(377	)		114
Total identified intangibles	$	6,504	$	(3,484	)	$	3,020
December 31, 2019:
Customer relationships	$	598	$	(305	)	$	293
Trademarks		190		(123	)		67
Patents		121		(47	)		74
Indefinite-lived trade names		280		—			280
Other		283		(145	)		138
Total identified intangibles	$	1,472	$	(620	)	$	852

Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables And Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consist of (in millions):

	December 31,
	2019		2018
Vendor costs	$	121	$	127
Compensation		270		331
Taxes (non income)		112		124
Warranty		90		105
Insurance		57		55
Fair value of derivatives		24		23
Commissions		31		34
Interest		8		7
Other		236		282
Total	$	949	$	1,088

Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Schedule of Components of Leases

Components of leases are as follows (in millions):

	December 31,
	2019		2018
Current portion of lease liabilities:
Operating	$	84	$	—
Financing		30		7
Total	$	114	$	7

	December 31,
	2019		2018
Long-term portion of lease liability:
Operating	$	424	$	—
Financing		250		222
Total	$	674	$	222

Components of Lease Expense

Components of lease expense were as follows (in millions):

	Years Ended
	December 31, 2019
Lease cost
Finance lease cost
Amortization of right-of-use assets	$	32
Interest on lease liabilities		13
Operating lease cost		115
Short-term lease cost		68
Sub-lease income		(11	)
Total	$	217

Schedule of Supplemental information Related to Leases

Supplemental information related to the Company’s leases is as follows (in millions):

	Year Ended
	December 31, 2019
Other information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows - finance leases	$	13
Operating cash flows - operating leases		115
Financing cash flows - finance leases		32
Right-of-use assets obtained in exchange for new:
Operating lease liabilities		53
Finance lease liabilities	$	12

Weighted average remaining lease term at December 31, 2019:
Operating leases	10 years
Finance leases	16 years
Weighted average discount rate at December 31, 2019:
Operating leases		4.48	%
Finance leases		4.58	%

Future Minimum Lease Commitments for Leases with Initial or Remaining Terms of One Year or More

Future minimum lease commitments for leases with initial or remaining terms of one year or more at December 31, 2019, are payable as follows (in millions):

	Operating			Finance
2020	$	98		$	38
2021		81			33
2022		64			25
2023		49			18
2024		40			15
Thereafter		228			210
Total lease payments		560			339
Less: Interest		(52	)		(59	)
Present value of lease liabilities	$	508		$	280

Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Debt

Debt consists of (in millions):

	December 31,
	2019		2018
$1.1 billion in Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042		1,088		1,088
$0.5 billion in Senior Notes, interest at 3.60% payable semiannually, principal due on December 1, 2029		493		—
$0.4 billion in Senior Notes, interest at 2.60% payable semiannually, principal due on December 1, 2022		399		1,394
Other debt		9		—
Long-term debt	$	1,989	$	2,482

Principal Payments of Debt

Principal payments of debt for years subsequent to 2019 are as follows (in millions):

2020		—
2021		—
2022		400
2023		—
2024		—
Thereafter		1,589
	$	1,989

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Change in Benefit Obligation, Plan Assets and Funded Status of Defined Benefit Pension Plans

	Pension benefits						Postretirement benefits
At year end	2019			2018			2019			2018
Benefit obligation at beginning of year	$	575		$	633		$	45		$	62
Service cost		1			1			—			—
Interest cost		18			18			2			2
Actuarial loss (gain)		42			(24	)		(15	)		(8	)
Benefits paid		(29	)		(40	)		(11	)		(13	)
Participants contributions		—			—			2			2
Exchange rate loss (gain)		5			(15	)		—			—
Special events		—			—			30			—
Plan amendments		—			4			—			—
Settlements		(12	)		(2	)		—			—
Benefit obligation at end of year	$	600		$	575		$	53		$	45

Fair value of plan assets at beginning of year	$	517		$	588		$	—		$	—
Actual return		80			(21	)		—			—
Benefits paid		(29	)		(40	)		(11	)		(13	)
Company contributions		5			5			9			11
Participants contributions		—			—			2			2
Exchange rate gain (loss)		6			(13	)		—			—
Settlements		(11	)		(2	)		—			—
Fair value of plan assets at end of year	$	568		$	517		$	—		$	—
Funded status	$	(32	)	$	(58	)	$	(53	)	$	(45	)

Accumulated benefit obligation at end of year	$	597		$	572

Assumption Rates Used for Benefit Obligations

The assumption rates used for benefit obligations are as follows:

	Years Ended December 31,
	2019	2018
Discount rate:
United States plan	2.50% - 3.20%	3.90% - 4.20%
International plans	0.90% - 2.30%	1.80% - 2.90%
Salary increase:
United States plan	N/A	N/A
International plans	1.80% - 3.10%	1.80% - 3.40%

Assumption Rates Used for Net Periodic Benefit Costs

The assumption rates used for net periodic benefit costs are as follows:

	Years Ended December 31,
	2019	2018	2017
Discount rate:
United States plan	3.90% - 4.20%	3.00% - 3.60%	3.10% - 4.00%
International plans	1.80% - 2.90%	1.80% - 2.40%	1.80% - 2.80%
Salary increase:
United States plan	N/A	N/A	N/A
International plans	1.80% - 3.40%	1.80% - 3.30%	1.80% - 3.50%
Expected return on assets:
United States plan	5.70%	5.60%	5.60%
International plans	1.90% - 4.30%	1.80% - 4.00%	1.80% - 3.00%

Plan's Assets Carried at Fair Value

The following table sets forth by level, within the fair value hierarchy, the Plan’s assets carried at fair value (in millions):

	Fair Value Measurements
	Total		Level 1		Level 2		Level 3
December 31, 2018:
Equity securities	$	140	$	—	$	140	$	—
Bonds		209		—		209		—
Other (insurance contracts)		168		—		113		55
Total Fair Value Measurements	$	517	$	—	$	462	$	55
December 31, 2019:
Equity securities	$	157	$	—	$	157	$	—
Bonds		227		—		227		—
Other (insurance contracts)		184		—		121		63
Total Fair Value Measurements	$	568	$	—	$	505	$	63

Summary of Changes in Fair Value of Plan's Level Three Assets

The following table sets forth a summary of changes in the fair value of the Plan’s Level 3 assets (in millions):

	Level 3 Plan Assets
Balance at December 31, 2017	$	61
Actual return on plan assets still held at reporting date		(1	)
Purchases, sales and settlements		(2	)
Currency translation adjustments		(3	)
Balance at December 31, 2018	$	55
Actual return on plan assets still held at reporting date		10
Purchases, sales and settlements		(1	)
Currency translation adjustments		(1	)
Balance at December 31, 2019	$	63

Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Components of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) are as follows (in millions):

				Derivative			Defined
	Currency			Financial			Benefit
	Translation			Instruments,			Plans,
	Adjustments			Net of Tax			Net of Tax			Total
Balance at December 31, 2016	$	(1,376	)	$	(39	)	$	(37	)	$	(1,452	)
Accumulated other comprehensive income (loss) before reclassifications		272			41			25			338
Amounts reclassified from accumulated other comprehensive income (loss)		—			5			(1	)		4
Balance at December 31, 2017	$	(1,104	)	$	7		$	(13	)	$	(1,110	)
Accumulated other comprehensive income (loss) before reclassifications		(298	)		(19	)		(13	)		(330	)
Amounts reclassified from accumulated other comprehensive income (loss)		6			(2	)		(1	)		3
Balance at December 31, 2018	$	(1,396	)	$	(14	)	$	(27	)	$	(1,437	)
Accumulated other comprehensive income (loss) before reclassifications		(7	)		(2	)		12			3
Amounts reclassified from accumulated other comprehensive income (loss)		—			12			(1	)		11
Balance at December 31, 2019	$	(1,403	)	$	(4	)	$	(16	)	$	(1,423	)

Components of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)

The components of amounts reclassified from accumulated other comprehensive income (loss) are as follows (in millions):

	Years Ended December 31,
	2019											2018											2017
	Currency		Derivative			Defined						Currency		Derivative			Defined						Currency		Derivative			Defined
	Translation		Financial			Benefit						Translation		Financial			Benefit						Translation		Financial			Benefit
	Adjustments		Instruments			Plans			Total			Adjustments		Instruments			Plans			Total			Adjustments		Instruments			Plans			Total
Revenue	$	—	$	1		$	—		$	1		$	—	$	2		$	—			2		$	—	$	(8	)	$	—		$	(8	)
Cost of revenue		—		14			—			14			—		(6	)		—			(6	)		—		12			—			12
Selling, general, and administrative		—		—			(1	)		(1	)		—		—			(1	)		(1	)		—		—			(1	)		(1	)
Other income (expense), net		—		—			—			-			6		—			—			6			—		—			—			—
Tax effect		—		(3	)		—			(3	)		—		2			—			2			—		1			-			1
	$	—	$	12		$	(1	)	$	11		$	6	$	(2	)	$	(1	)	$	3		$	—	$	5		$	(1	)	$	4

Common Stock (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Summary of Stock Options

The following summarizes options activity:

	Years Ended December 31,
	2019					2018					2017
	Number			Average		Number			Average		Number			Average
	of			Exercise		of			Exercise		of			Exercise
	Shares			Price		Shares			Price		Shares			Price
Shares under option at beginning of year		21,009,508		$	48.88		22,472,047		$	48.99		17,439,060		$	54.08
Granted		1,493,576			28.72		1,610,599			35.09		6,961,041			36.51
Forfeited		(944,917	)		50.57		(1,318,380	)		57.56		(1,482,531	)		55.22
Exercised		(248,068	)		29.70		(1,754,758	)		44.12		(445,523	)		29.83
Shares under option at end of year		21,310,099		$	47.68		21,009,508		$	48.88		22,472,047		$	48.99
Exercisable at end of year		17,796,607		$	50.49		15,223,029		$	54.13		14,309,944		$	55.00

Summary of Stock Option Outstanding Information

The following summarizes information about stock options outstanding at December 31, 2019:

	Weighted-Avg		Options Outstanding				Options Exercisable
	Remaining				Weighted-Avg				Weighted-Avg
Range of Exercise Price	Contractual Life		Shares		Exercise Price		Shares		Exercise Price
$28.24 - $55.00		6.21		15,776,394	$	39.77		12,262,902	$	41.58
$55.01 - $70.00		3.65		3,480,067		66.82		3,480,067		66.82
$70.01 - $77.99		1.68		2,053,638		75.96		2,053,638		75.96
Total		5.36		21,310,099	$	47.68		17,796,607	$	50.49

Assumption Used in Determination of Fair Value of Share Based Payment Awards

The use of the Black Scholes model requires the use of actual employee exercise activity data and the use of a number of complex assumptions including expected volatility, risk-free interest rate, expected dividends and expected term.

	Years Ended December 31,
Valuation Assumptions:	2019			2018			2017
Expected volatility		35.9	%		31.8	%		36.1	%
Risk-free interest rate		2.5	%		2.7	%		2.2	%
Expected dividend yield		0.7	%		0.6	%		0.6	%
Expected term (in years)		4.5			4.3			3.0

Summary of Information and Changes in Stock Options with Regard to Stock Option Plans

The following summary presents information regarding outstanding options at December 31, 2019 and changes during 2019 with regard to options under all stock option plans:

				Weighted- Average		Weighted Average Remaining Contractual		Aggregate
	Shares			Exercise Price		Term (years)		Intrinsic Value
Outstanding at December 31, 2018		21,009,508		$	48.88		6.01	$	458,576
Granted		1,493,576		$	28.72
Forfeited		(944,917	)	$	50.57
Exercised		(248,068	)	$	29.70
Outstanding at December 31, 2019		21,310,099		$	47.68		5.36	$	—
Exercisable at December 31, 2019		17,796,607		$	50.49		4.44	$	—

Summary of Information Regarding Outstanding SARs

The following summary presents information regarding outstanding SARs:

	Year Ended December 31,
	2019					2018
	Number			Average		Number			Average
	of			Exercise		of			Exercise
	Shares			Price		Shares			Price
Shares under SARs at beginning of year		1,399,302		$	28.49		1,493,689		$	28.41
Granted		7,088			28.72		14,228			35.09
Forfeited		(76,133	)		29.18		(83,124	)		28.32
Exercised		—			—		(25,491	)		42.61
Shares under SARs at end of year		1,330,257		$	28.45		1,399,302		$	28.49
Exercisable at end of year		1,315,701		$	28.40		165,755		$	28.57

Summary of Information Regarding Outstanding Restricted Shares

The following summary presents information regarding outstanding restricted shares:

	Years Ended December 31,
	2019					2018					2017
				Weighted-					Weighted-					Weighted-
	Number			Average		Number			Average		Number			Average
	of			Grant Date		of			Grant Date		of			Grant Date
	Units			Fair Value		Units			Fair Value		Units			Fair Value
Nonvested at beginning of year		5,914,860		$	34.41		4,889,678		$	37.04		4,563,983		$	41.10
Granted		3,335,315		$	28.52		2,657,115		$	35.17		1,738,589		$	38.74
Vested		(2,901,945	)	$	25.67		(1,242,682	)	$	34.86		(1,018,206	)	$	34.84
Forfeited		(73,922	)	$	50.57		(389,251	)	$	57.56		(394,688	)	$	55.22
Nonvested at end of year		6,274,308		$	33.10		5,914,860		$	34.41		4,889,678		$	37.04

Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue From Contract With Customer [Abstract]

Summary of Disaggregate Revenue by Destinations

	Year Ended December 31, 2019
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,710	$	1,122	$	529	$	—		$	3,361
International		1,441		1,590		2,087		—			5,118
Eliminations		63		59		66		(188	)		—
	$	3,214	$	2,771	$	2,682	$	(188	)	$	8,479

Land	$	2,531	$	1,808	$	758	$	—		$	5,097
Offshore		620		904		1,858		—			3,382
Eliminations		63		59		66		(188	)		—
	$	3,214	$	2,771	$	2,682	$	(188	)	$	8,479

	Year Ended December 31, 2018
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,817	$	1,302	$	663	$	—		$	3,782
International		1,345		1,543		1,783		—			4,671
Eliminations		73		86		129		(288	)		—
	$	3,235	$	2,931	$	2,575	$	(288	)	$	8,453

Land	$	2,683	$	1,985	$	854	$	—		$	5,522
Offshore		479		860		1,592		—			2,931
Eliminations		73		86		129		(288	)		—
	$	3,235	$	2,931	$	2,575	$	(288	)	$	8,453

	Year Ended December 31, 2017
			Completion
	Wellbore		& Production		Rig
	Technologies		Solutions		Technologies		Eliminations			Total
North America	$	1,408	$	1,093	$	545	$	—		$	3,046
International		1,116		1,528		1,614		—			4,258
Eliminations		53		51		93		(197	)		—
	$	2,577	$	2,672	$	2,252	$	(197	)	$	7,304

Land	$	2,047	$	1,752	$	740	$	—		$	4,539
Offshore		477		869		1,419		—			2,765
Eliminations		53		51		93		(197	)		—
	$	2,577	$	2,672	$	2,252	$	(197	)	$	7,304

Summary of Changes in Carrying Amount of Contract Assets and Contract Liabilities

The changes in the carrying amount of contract assets and contract liabilities are as follows (in millions):

Contract Assets
Balance at December 31, 2018	$	565
Additions and Milestone Billings		(1,018	)
Revenue Recognized		1,131
Currency translation adjustments and other		(35	)
Balance at December 31, 2019	$	643

Contract Liabilities
Balance at December 31, 2018	$	458
Additions and Milestone Billings		809
Revenue Recognized		(782	)
Currency translation adjustments and other		(58	)
Balance at December 31, 2019	$	427

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Domestic and Foreign Components of Income (Loss) Before Income Taxes

The domestic and foreign components of income (loss) before income taxes were as follows (in millions):

	Years Ended December 31,
	2019			2018			2017
Domestic	$	(4,501	)	$	(168	)	$	(470	)
Foreign		(1,961	)		209			78
	$	(6,462	)	$	41		$	(392	)

Components of Provision for Income Taxes

The components of the provision for income taxes consisted of (in millions):

	Years Ended December 31,
	2019			2018			2017
Current:
Federal	$	(7	)	$	(5	)	$	23
State		4			(3	)		1
Foreign		60			134			161
Total current income tax provision		57			126			185
Deferred:
Federal		(344	)		11			(332	)
State		(18	)		-			(2	)
Foreign		(64	)		(74	)		(7	)
Total deferred income tax provision		(426	)		(63	)		(341	)
Total income tax provision	$	(369	)	$	63		$	(156	)

Difference Between Effective Tax Rate

The difference between the effective tax rate reflected in the provision for income taxes and the U.S. federal statutory rate was as follows (in millions):

	Years Ended December 31,
	2019			2018			2017
Federal income tax at U.S. statutory rate	$	(1,357	)	$	9		$	(137	)
Foreign income tax rate differential		(40	)		(3	)		(21	)
Goodwill impairment		666			—			—
Nondeductible expenses		61			20			38
Foreign dividends, net of foreign tax credits		163			27			(132	)
Tax rate change on timing differences		1			(7	)		(245	)
Change in uncertain tax positions		(60	)		(5	)		81
Prior years taxes		3			(13	)		(26	)
Tax impact on foreign exchange		(2	)		(3	)		5
Change in deferred tax valuation allowance		218			49			280
State income taxes - net of federal benefit		(16	)		(3	)		(1	)
Tax exempt income		(6	)		(5	)		—
Income tax credits		—			(3	)		(4	)
Other		—			—			6
Total income tax provision	$	(369	)	$	63		$	(156	)

Significant Components of Deferred Tax Assets and Liability

Significant components of our deferred tax assets and liabilities were as follows (in millions):

	December 31,
	2019			2018
Deferred tax assets:
Allowances and operating liabilities	$	395		$	293
Net operating loss carryforwards		270			182
Stock Compensation		69			66
Tax credit carryforwards		702			768
Other		60			59
Valuation allowance		(1,175	)		(955	)
Total deferred tax assets		321			413
Deferred tax liabilities:
Tax over book depreciation		115			139
Capital leases		86			-
Intangible assets		110			688
Deferred income		65			70
Accrued tax on unremitted earnings		33			17
Other		52			52
Total deferred tax liabilities		461			966
Net deferred tax liability	$	140		$	553

Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):

	2019			2018			2017
Unrecognized tax benefit at beginning of year	$	98		$	132		$	78
Gross increase for current period tax positions		—			15			10
Gross increase for tax positions in prior years		10			31			64
Gross decrease for tax positions in prior years		(60	)		(10	)		(14	)
Cash Settlements		(3	)		(69	)		—
Lapse of statute of limitations		(7	)		(1	)		(6	)
Unrecognized tax benefit at end of year	$	38		$	98		$	132

Summary of Net Operating Loss Carryforwards

Net operating loss carryforwards by jurisdiction and expiration as of December 31, 2019 were as follows (in millions):

	Federal			State			Foreign			Total
2020 - 2024 Expiration	$	6		$	4		$	73		$	83
2025 - 2039 Expiration		30			150			346			526
Unlimited Expiration		198			—			406			604
Total Net Operating Loss (NOL)	$	234		$	154		$	825		$	1,213
Tax Effected NOL	$	49		$	9		$	212			270
Valuation Allowance (VA)		(49	)		(9	)		(211	)		(269	)
Tax Effected NOL Net of VA	$	—		$	—		$	1		$	1

Business Segments and Geographic Areas (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Revenues by Country Based on Sales Destination of Products or Services

The following table presents consolidated revenues by country based on sales destination of the products or services (in millions):

	Years Ended December 31,
	2019		2018		2017
United States	$	3,112	$	3,480	$	2,760
Norway		512		368		295
Singapore		473		321		188
Saudi Arabia		436		444		310
United Kingdom		333		309		279
China		285		231		298
Brazil		269		415		498
Canada		247		302		286
United Arab Emirates		224		248		223
South Korea		69		169		261
Other Countries		2,519		2,166		1,906
Total	$	8,479	$	8,453	$	7,304

Plant, Property and Equipment by Country Based on the Location

The following table presents plant, property and equipment by country based on the location (in millions):

	December 31,
	2019		2018
United States	$	1,257	$	1,603
Brazil		194		217
United Kingdom		112		125
Denmark		111		119
South Korea		77		91
Canada		77		79
United Arab Emirates		52		60
Mexico		43		48
Singapore		28		47
Russia		16		69
Other Countries		387		339
Total	$	2,354	$	2,797

Business Segments

The following table presents selected financial data by business segment (in millions):

	Wellbore Technologies			Completion & Production Solutions			Rig Technologies			Eliminations and corporate costs (1)			Total
December 31, 2019
Revenue	$	3,214		$	2,771		$	2,682		$	(188	)	$	8,479
Operating profit (loss)⁽²⁾		(3,551	)		(1,934	)		(524	)		(270	)		(6,279	)
Capital expenditures		123			64			31			15			233
Depreciation and amortization		284			150			87			12			533
Goodwill		843			1,054			910			—			2,807
Total assets		4,078			3,826			3,758			1,487			13,149
December 31, 2018
Revenue	$	3,235		$	2,931		$	2,575		$	(288	)	$	8,453
Operating profit (loss)⁽²⁾		131			166			213			(299	)		211
Capital expenditures		135			87			17			5			244
Depreciation and amortization		374			212			90			14			690
Goodwill		3,011			2,041			1,212			—			6,264
Total assets		7,929			6,233			3,906			1,728			19,796
December 31, 2017
Revenue	$	2,577		$	2,672		$	2,252		$	(197	)	$	7,304
Operating profit (loss)⁽²⁾		(102	)		98			(14	)		(259	)		(277	)
Capital expenditures		99			69			16			8			192
Depreciation and amortization		379			215			88			16			698
Goodwill		2,956			2,122			1,149			—			6,227
Total assets		7,848			5,782			4,625			1,951			20,206

(1)

(2)

Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Summarized Quarterly Results

Summarized quarterly results, were as follows (in millions, except per share data):

	First			Second			Third			Fourth
	Quarter			Quarter			Quarter			Quarter
Year ended December 31, 2019
Revenue	$	1,940		$	2,132		$	2,126		$	2,281
Gross profit		256			62			151			376
Net profit (loss) attributable to Company		(77	)		(5,389	)		(244	)		(385	)
Net profit (loss) attributable to Company per basic share		(0.20	)		(14.11	)		(0.64	)		(1.01	)
Net profit (loss) attributable to Company per diluted share		(0.20	)		(14.11	)		(0.64	)		(1.01	)
Cash dividends per share		0.05			0.05			0.05			0.05
Year ended December 31, 2018
Revenue	$	1,795		$	2,106		$	2,154		$	2,398
Gross profit (loss)		287			355			393			409
Net profit (loss) attributable to Company		(68	)		24			1			12
Net profit (loss) attributable to Company per basic share		(0.18	)		0.06			0.00			0.03
Net profit (loss) attributable to Company per diluted share		(0.18	)		0.06			0.00			0.03
Cash dividends per share		0.05			0.05			0.05			0.05

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Significant Accounting Policies [Line Items]
Maturity period of investments description	three months or less
Additional inventory reserve charges	$ 659	$ 49	$ 114
Inventory reserves total	$ 843	$ 644
Percentage of inventory reserve	27.70%	17.70%
Depreciation expense related to property, plant and equipment	$ 355	$ 349	359
Impairment of long-lived assets	2,209
Asset impairment charges	56	0	0
Cash payment for acquisition	180	280	86
Net foreign currency transaction gains (losses)	(36)	(52)	$ (3)
Net revenue recognized from performance obligations satisfied in previous periods	62	65
Remaining performance obligations	4,286
Net allowances for doubtful accounts	$ 132	$ 161
Anti-dilutive stock options outstanding	20	20	12
Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets	$ 252	$ 21	$ 10
Minimum [Member]
Significant Accounting Policies [Line Items]
Derivative, term of contract	2 months
Maximum [Member]
Significant Accounting Policies [Line Items]
Derivative, term of contract	24 months

Summary of Significant Accounting Policies - Computation of Weighted Average Basic and Diluted Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net loss attributable to Company	$ (385)	$ (244)	$ (5,389)	$ (77)	$ 12	$ 1	$ 24	$ (68)	$ (6,095)	$ (31)	$ (237)
Denominator:
Basic—weighted average common shares outstanding									382	378	377
Dilutive effect of employee stock options and other unvested stock awards									0	0	0
Diluted outstanding shares									382	378	377
Basic loss attributable to Company per share	$ (1.01)	$ (0.64)	$ (14.11)	$ (0.20)	$ 0.03	$ 0.00	$ 0.06	$ (0.18)	$ (15.96)	$ (0.08)	$ (0.63)
Diluted loss attributable to Company per share	(1.01)	(0.64)	(14.11)	(0.20)	0.03	0.00	0.06	(0.18)	(15.96)	(0.08)	(0.63)
Cash dividends per share	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.20	$ 0.20	$ 0.20

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Derivative Financial Instruments - Derivative Instruments and their Balance Sheet Classifications (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 18	$ 6
Liability Derivatives	26	36
Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	9	2
Liability Derivatives	20	28
Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	9	4
Liability Derivatives	6	8
Foreign Exchange Contracts [Member] \| Designated as Hedging Instruments [Member] \| Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	18	17
Foreign Exchange Contracts [Member] \| Not Designated as Hedging Instruments [Member] \| Accrued liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	6	6
Foreign Exchange Contracts [Member] \| Prepaid and Other Current Assets [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	5	2
Foreign Exchange Contracts [Member] \| Prepaid and Other Current Assets [Member] \| Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	8	4
Foreign Exchange Contracts [Member] \| Other Assets [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	4
Foreign Exchange Contracts [Member] \| Other Assets [Member] \| Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	1
Foreign Exchange Contracts [Member] \| Other Liabilities [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 2	11
Foreign Exchange Contracts [Member] \| Other Liabilities [Member] \| Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives		$ 2

Inventories, net - Inventories (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 577	$ 614
Work in process	364	501
Finished goods and purchased products	2,099	2,515
Inventory, Gross	3,040	3,630
Less: Inventory reserve	(843)	(644)
Total	$ 2,197	$ 2,986

Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross	$ 5,337	$ 5,484
Less: Accumulated Depreciation	(2,983)	(2,687)
Property, plant and equipment, net	2,354	2,797
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross	231	227
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross	$ 1,309	1,271
Estimated Useful Lives	5-35 Years
Operating Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross	$ 2,946	3,140
Estimated Useful Lives	2-20 Years
Rental Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross	$ 851	597
Estimated Useful Lives	2-15 Years
Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment Gross		$ 249

Asset Impairments - Additional Information (Detail) $ in Millions	3 Months Ended			6 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 Reporting_Unit	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Indefinite Lived Intangible Assets By Major Class [Line Items]
Decrease in trade percentage					14.00%
Impairment charge on goodwill	$ 410		$ 3,099		$ 3,509
Impairment of intangible assets, indefinite-lived (excluding goodwill)	16		87
Goodwill	2,807			$ 2,807	$ 2,807	$ 6,264	$ 6,227
Impairment of Intangible Assets, Finite-lived			1,901	22
Impairment of property, plant and equipment			230
Impairment of right-of-use assets			$ 56
Estimated useful lives of intangible assets, minimum					2 years
Estimated useful lives of intangible assets, maximum					30 years
Amortization expense, 2019	61			61	$ 61
Amortization expense, 2020	57			57	57
Amortization expense, 2021	55			55	55
Amortization expense, 2022	48			48	48
Amortization expense, 2023	43			43	43
Intangibles, net	852			852	852	3,020
M/D Totco [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	63			63	63
PFT [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	407			407	407
Wellbore Technologies [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charge on goodwill					2,178
Reporting units reorganized \| Reporting_Unit		2
Goodwill	843			843	843	3,011	2,956
Impairment of property, plant and equipment				5
Wellbore Technologies [Member] \| Downhole [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	124			124	124
Wellbore Technologies [Member] \| ReedHycalog [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	358			358	358
Wellbore Technologies [Member] \| Grant Prideco [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	125			125	125
Rig Technologies [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charge on goodwill					312
Goodwill	910			910	910	1,212	1,149
Impairment of property, plant and equipment				10
Rig Technologies [Member] \| Marine Construction [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	57			57	57
Completion & Production Solutions [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Impairment charge on goodwill					1,019
Goodwill	1,054			1,054	1,054	$ 2,041	$ 2,122
Impairment of property, plant and equipment				7
Completion & Production Solutions [Member] \| Completion Tools [Member]
Indefinite Lived Intangible Assets By Major Class [Line Items]
Goodwill	$ 20			$ 20	$ 20

Asset Impairments - Goodwill Identified, by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Beginning Balance			$ 6,264	$ 6,227
Goodwill acquired and adjusted during period			62	102
Impairment	$ (410)	$ (3,099)	(3,509)
Currency translation adjustments			(10)	(65)
Ending Balance	2,807		2,807	6,264
Wellbore Technologies [Member]
Goodwill [Line Items]
Beginning Balance			3,011	2,956
Goodwill acquired and adjusted during period			9	64
Impairment			(2,178)
Currency translation adjustments			1	(9)
Ending Balance	843		843	3,011
Completion & Production Solutions [Member]
Goodwill [Line Items]
Beginning Balance			2,041	2,122
Goodwill acquired and adjusted during period			40	(33)
Impairment			(1,019)
Currency translation adjustments			(8)	(48)
Ending Balance	1,054		1,054	2,041
Rig Technologies [Member]
Goodwill [Line Items]
Beginning Balance			1,212	1,149
Goodwill acquired and adjusted during period			13	71
Impairment			(312)
Currency translation adjustments			(3)	(8)
Ending Balance	$ 910		$ 910	$ 1,212

Asset Impairments - Identified Intangible Assets, by Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	$ 3,020	$ 3,301
Impairment	(2,004)
Additions to intangible assets	17	99
Amortization	(178)	(341)
Currency translation adjustments	(3)	(39)
Ending Balance	852	3,020
Wellbore Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	1,735	1,883
Impairment	(1,314)
Additions to intangible assets	6	41
Amortization	(94)	(201)
Currency translation adjustments	(7)	12
Ending Balance	326	1,735
Completion & Production Solutions [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	1,005	1,160
Impairment	(690)
Additions to intangible assets	11	3
Amortization	(56)	(111)
Currency translation adjustments	5	(47)
Ending Balance	275	1,005
Rig Technologies [Member]
Intangible Asset Excluding Goodwill [Line Items]
Beginning Balance	280	258
Additions to intangible assets		55
Amortization	(28)	(29)
Currency translation adjustments	(1)	(4)
Ending Balance	$ 251	$ 280

Asset Impairments - Identified Intangible Assets, by Major Classification (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	$ 1,472	$ 6,504
Accumulated Amortization	(620)	(3,484)
Net Book Value	852	3,020	$ 3,301
Indefinite-lived Trade Names [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	280	383
Net Book Value	280	383
Customer Relationships [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	598	4,078
Accumulated Amortization	(305)	(2,352)
Net Book Value	293	1,726
Trademarks [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	190	891
Accumulated Amortization	(123)	(341)
Net Book Value	67	550
Patents [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	121	661
Accumulated Amortization	(47)	(414)
Net Book Value	74	247
Other [Member]
Intangible Assets Net Excluding Goodwill [Line Items]
Gross	283	491
Accumulated Amortization	(145)	(377)
Net Book Value	$ 138	$ 114

Accrued Liabilities - Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Payables And Accruals [Abstract]
Vendor costs	$ 121	$ 127
Compensation	270	331
Taxes (non income)	112	124
Warranty	90	105	$ 135
Insurance	57	55
Fair value of derivatives	24	23
Commissions	31	34
Interest	8	7
Other	236	282
Total	$ 949	$ 1,088

Leases - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Lease right-of-use assets		$ 786
Lease right-of-use assets, operating	$ 444	537
Lease right-of-use assets, financing	230	249
Lease liabilities		839
Operating lease liabilities	508	554
Financing lease liabilities	$ 280	$ 285

Leases - Schedule of Components of Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current portion of lease liabilities:
Operating	$ 84
Financing	30	$ 7
Total	114	7
Long-term portion of lease liability:
Operating	424
Financing	250	222
Total	$ 674	$ 222

Leases - Components of Lease Expense (Detail) $ in Millions	12 Months Ended
Leases - Components of Lease Expense (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Finance lease cost
Finance lease cost, amortization of right-of-use assets	$ 32
Finance lease cost, interest on lease liabilities	13
Operating lease cost	115
Short-term lease cost	68
Sub-lease income	(11)
Total	$ 217

Leases - Supplemental Information Related to Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities, operating cash flows from finance leases	$ 13
Cash paid for amounts included in the measurement of lease liabilities, operating cash flows from operating leases	115
Cash paid for amounts included in the measurement of lease liabilities, financing cash flows from finance leases	32	$ 8	$ 6
Right-of-use assets obtained in exchange for new:
Right-of-use assets obtained in exchange for new operating lease liabilities	53
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 12
Weighted average remaining lease term (years), operating leases	10 years
Weighted average remaining lease term (years), finance leases	16 years
Weighted average remaining lease term, operating leases	4.48%
Weighted average discount rate, finance leases	4.58%

Leases - Future Minimum Lease Commitments for Leases with Initial or Remaining Terms of One Year or More (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
Operating
Operating lease, 2020	$ 98
Operating lease, 2021	81
Operating lease, 2022	64
Operating lease, 2023	49
Operating lease, 2024	40
Operating lease, Thereafter	228
Total lease payments	560
Less: Interest	(52)
Present value of lease liabilities	508	$ 554
Finance
Finance leases, 2020	38
Finance leases, 2021	33
Finance leases, 2022	25
Finance leases, 2023	18
Finance leases, 2024	15
Finance leases, Thereafter	210
Total lease payments	339
Less: Interest	(59)
Present value of lease liabilities	$ 280	$ 285

Debt - Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Senior Notes	$ 1,980	$ 2,482
Other debt	9
Long-term debt	1,989	2,482
Senior Notes, Interest at 3.95% Payable Semiannually, Principal Due on December 1, 2042 [Member]
Debt Instrument [Line Items]
Senior Notes	1,088	1,088
Senior Notes, Interest at 3.60% Payable Semiannually, Principal Due on December 1, 2029 [Member]
Debt Instrument [Line Items]
Senior Notes	493
Senior Notes, Interest at 2.60% Payable Semiannually, Principal Due on December 1, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 399	$ 1,394

Debt - Debt (Parenthetical) (Detail) - USD ($)	12 Months Ended
Debt - Debt (Parenthetical) (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Senior Notes, Interest at 3.95% Payable Semiannually, Principal Due on December 1, 2042 [Member]
Debt Instrument [Line Items]
Senior note face amount	$ 1,100,000,000	$ 1,100,000,000
Senior notes interest rate	3.95%	3.95%
Senior note due date	Dec. 01, 2042	Dec. 01, 2042
Senior Notes, Interest at 3.60% Payable Semiannually, Principal Due on December 1, 2029 [Member]
Debt Instrument [Line Items]
Senior note face amount	$ 500,000,000	$ 500,000,000
Senior notes interest rate	3.60%	3.60%
Senior note due date	Dec. 01, 2029	Dec. 01, 2029
Senior Notes, Interest at 2.60% Payable Semiannually, Principal Due on December 1, 2022 [Member]
Debt Instrument [Line Items]
Senior note face amount	$ 400,000,000	$ 400,000,000
Senior notes interest rate	2.60%	2.60%
Senior note due date	Dec. 01, 2022	Dec. 01, 2022

Debt - Principal Payments of Debt (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Debt Disclosure [Abstract]
2022	$ 400
Thereafter	1,589
Total debt	$ 1,989

Debt - Additional Information (Detail) - USD ($)				12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Dec. 04, 2019	Nov. 04, 2019	Oct. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Interest rate under multi currency facility				LIBOR, NIBOR or CDOR plus 1.125%
Capitalization ratio, Maximum				60.00%
Capitalization ratio, Actual				22.40%
Funds available under revolving credit facility				$ 2,000,000,000.0
Loss on extinguishment of debt				(26,000,000)
Outstanding letters of credit under various bilateral letter of credit facilities				502,000,000
Carrying value of Unsecured Senior Notes				1,980,000,000	$ 2,482,000,000
Fair Value, Inputs, Level 2 [Member] \| Unsecured Debt [Member]
Debt Instrument [Line Items]
Fair value of Unsecured Senior Notes				$ 1,947,000,000	$ 2,211,000,000
3.60% unsecured Senior Notes due 2029 [Member]
Debt Instrument [Line Items]
Unsecured senior notes issued		$ 500,000,000
Senior notes interest rate		3.60%
Proceeds from issuance of unsecured senior notes		$ 493,000,000
Underwriting expense		3,000,000
Discount on unsecured senior notes		$ 4,000,000
Description of Unsecured senior notes				Interest on each series of notes is due on June 1 and December 1 of each year, beginning on June 1, 2020. The Company may redeem some or all of the Senior Notes at any time at the applicable redemption price, plus accrued interest, if any, to the redemption date. At December 31, 2020, the Company was in compliance with the covenants under the indenture governing the Senior Notes.
2.60% unsecured Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Senior notes interest rate	2.60%
Repayment of debt	$ 1,000,000,000
Payment on redemption	1,023,000,000
Premium on redemption	23,100,000
Accrued and unpaid interest	200,000
Loss on extinguishment of debt	(26,000,000)
Premium on debt	23,000,000
Non cash charges	$ 3,000,000
Canadian Dollar Offered Rate (CDOR) [Member]
Debt Instrument [Line Items]
Variable rate			1.125%
Five Year Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity			$ 2,000,000,000
Credit facility, maturity date				Oct. 30, 2024
Credit facility, extendable borrowing capacity			$ 3,000,000,000.0
Variable rate basis				LIBOR, NIBOR or CDOR plus
Unsecured Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, Period				5 years
Five Year Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity				$ 2,000,000,000.0
Credit facility, Period					5 years
Borrowings under commercial paper				0
Outstanding letters of credit issued				$ 0

Employee Benefit Plans - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Employee	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Compensation Related Costs Disclosure [Line Items]
Expenses for defined-contribution plans	$ 70	$ 68	$ 64
Net periodic benefit income (cost)	2	$ 3	$ (1)
Defined benefit plan, expected future benefit payments in year five	$ 32
Expected years of defined benefit plans	5 years
Expected future benefit amounts to pay, total	$ 317
United States [Member]
Compensation Related Costs Disclosure [Line Items]
Number of U.S. employees participate in defined benefit health care plans \| Employee	24
Number of U.S retirees and spouses participate in defined benefit health care plans \| Employee	1,912

Employee Benefit Plans - Change in Benefit Obligation, Plan Assets and Funded Status of Defined Benefit Pension Plans (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	$ 517
Fair value of plan assets at end of year	568	$ 517
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	575	633
Service cost	1	1
Interest cost	18	18
Actuarial loss (gain)	42	(24)
Benefits paid	(29)	(40)
Exchange rate loss (gain)	5	(15)
Plan amendments		4
Settlements	(12)	(2)
Benefit obligation at end of year	600	575
Fair value of plan assets at beginning of year	517	588
Actual return	80	(21)
Benefits paid	(29)	(40)
Company contributions	5	5
Exchange rate gain (loss)	6	(13)
Settlements	(11)	(2)
Fair value of plan assets at end of year	568	517
Funded status	(32)	(58)
Accumulated benefit obligation at end of year	597	572
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	45	62
Interest cost	2	2
Actuarial loss (gain)	(15)	(8)
Benefits paid	(11)	(13)
Participants contributions	2	2
Special events	30
Benefit obligation at end of year	53	45
Benefits paid	(11)	(13)
Company contributions	9	11
Participants contributions	2	2
Funded status	$ (53)	$ (45)

Employee Benefit Plans - Assumption Rates Used for Net Periodic Benefit Costs (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate minimum	3.90%	3.00%	3.10%
Discount rate maximum	4.20%	3.60%	4.00%
Expected return on assets	5.70%	5.60%	5.60%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate minimum	1.80%	1.80%	1.80%
Discount rate maximum	2.90%	2.40%	2.80%
Salary increase minimum	1.80%	1.80%	1.80%
Salary increase maximum	3.40%	3.30%	3.50%
Expected return on assets, minimum	1.90%	1.80%	1.80%
Expected return on assets, maximum	4.30%	4.00%	3.00%

Employee Benefit Plans - Plan's Assets Carried at Fair Value (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	$ 568	$ 517
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	157	140
Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	227	209
Other Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	184	168
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	505	462
Fair Value, Inputs, Level 2 [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	157	140
Fair Value, Inputs, Level 2 [Member] \| Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	227	209
Fair Value, Inputs, Level 2 [Member] \| Other Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	121	113
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	63	55	$ 61
Fair Value, Inputs, Level 3 [Member] \| Other Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurements	$ 63	$ 55

Employee Benefit Plans - Summary of Changes in Fair Value of Plan's Level Three Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	$ 517
Fair value of plan assets at end of year	568	$ 517
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	55	61
Actual return on plan assets still held at reporting date	10	(1)
Purchases, sales and settlements	(1)	(2)
Currency translation adjustments	(1)	(3)
Fair value of plan assets at end of year	$ 63	$ 55

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 13,889	$ 14,160	$ 14,003
Ending Balance	7,846	13,889	14,160
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,396)	(1,104)	(1,376)
Accumulated other comprehensive income (loss) before reclassifications	(7)	(298)	272
Amounts reclassified from accumulated other comprehensive income (loss)		6
Ending Balance	(1,403)	(1,396)	(1,104)
Derivative Financial Instruments, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(14)	7	(39)
Accumulated other comprehensive income (loss) before reclassifications	(2)	(19)	41
Amounts reclassified from accumulated other comprehensive income (loss)	12	(2)	5
Ending Balance	(4)	(14)	7
Defined Benefit Plans, Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(27)	(13)	(37)
Accumulated other comprehensive income (loss) before reclassifications	12	(13)	25
Amounts reclassified from accumulated other comprehensive income (loss)	(1)	(1)	(1)
Ending Balance	(16)	(27)	(13)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,437)	(1,110)	(1,452)
Accumulated other comprehensive income (loss) before reclassifications	3	(330)	338
Amounts reclassified from accumulated other comprehensive income (loss)	11	3	4
Ending Balance	$ (1,423)	$ (1,437)	$ (1,110)

Accumulated Other Comprehensive Income (Loss) - Components of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue	$ 2,281	$ 2,126	$ 2,132	$ 1,940	$ 2,398	$ 2,154	$ 2,106	$ 1,795	$ 8,479	$ 8,453	$ 7,304
Selling, general, and administrative									(1,303)	(1,233)	(1,169)
Other income (expense), net									(90)	(99)	(33)
Tax effect									369	(63)	156
Net loss attributable to Company	$ (385)	$ (244)	$ (5,389)	$ (77)	$ 12	$ 1	$ 24	$ (68)	(6,095)	(31)	(237)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue									1	2	(8)
Cost of revenue									14	(6)	12
Selling, general, and administrative									(1)	(1)	(1)
Other income (expense), net										6
Tax effect									(3)	2	1
Net loss attributable to Company									11	3	4
Currency Translation Adjustments [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Other income (expense), net										6
Net loss attributable to Company										6
Derivative Financial Instruments, Net of Tax [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Revenue									1	2	(8)
Cost of revenue									14	(6)	12
Tax effect									(3)	2	1
Net loss attributable to Company									12	(2)	5
Defined Benefit Plans, Net of Tax [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general, and administrative									(1)	(1)	(1)
Net loss attributable to Company									$ (1)	$ (1)	$ (1)

Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Other comprehensive income (loss) before reclassifications	$ (7)	$ (292)	$ 272
Derivative financial instruments, net of tax	10	(21)	46
Changes in derivative financial instruments, tax	$ 4	$ 2	$ 13

Common Stock - Additional Information (Detail) $ / shares in Units, $ in Millions				12 Months Ended
	May 28, 2019 $ / shares shares	Feb. 27, 2019 $ / shares shares	Dec. 20, 2017 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) Installment $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock, authorized				1,000,000,000	1,000,000,000
Number of preferred stock, authorized				10,000,000
Common stock, par value \| $ / shares				$ 0.01	$ 0.01
Preferred stock, par value \| $ / shares				$ 0.01
Preferred stock, shares issued				0
Preferred stock, shares outstanding				0
Aggregated cash dividends paid \| $				$ 77	$ 76	$ 76
Stock-based compensation expense \| $				130	110	124
Income tax provision recognized \| $				$ 14	$ 16	$ 24
Duration of performance-based restricted stock awards, vested				Options granted under our stock-based compensation plans generally vest over a three-year period starting one year from the date of grant and expire ten years from the date of grant.
Earlier authorized shares under stock based compensation \| shares				69,400,000
Stock option, Minimum Range \| $ / shares				$ 28.24
Stock option, Maximum Range \| $ / shares				77.99
Weighted average grant-date fair value of options \| $ / shares				$ 9.06	$ 10.01	$ 9.68
Total intrinsic value of options exercised \| $				$ 6	$ 54
Total unrecognized compensation cost related to nonvested stock options \| $				$ 17
Compensation cost not yet recognized, period for recognition				3 years
Total fair value of stock options vested \| $				$ 32	26	$ 70
Cash received from option exercises \| $				7	54	13
Tax benefit (expense) realized for the tax deductions from option exercises \| $				$ (2)	$ 2	$ (2)
Stock options granted				1,493,576	1,610,599	6,961,041
Weighted average exercise price per share of options \| $ / shares				$ 28.72	$ 35.09	$ 36.51
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights exchange percentage			94.75%
Cash payment of stock appreciation rights \| $			$ 14
Cash paid to settle SARs \| $				$ 0
Compensation cost recognized \| $				$ 0	$ 0	$ 8
Shares granted				7,088	14,228
Restricted stock granted fair value \| $ / shares				$ 28.72	$ 35.09
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value of options \| $ / shares			$ 8.47
Stock options granted			3,613,707
Weighted average exercise price per share of options \| $ / shares			$ 34.32
Restricted Stock and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Duration of performance-based restricted stock awards, vested				The restricted stock and restricted stock units vest in three equal annual installments commencing on the first anniversary of the date of grant.
Shares granted		2,895,086		3,335,315	2,657,115	1,738,589
Restricted stock granted fair value \| $ / shares		$ 28.72		$ 28.52	$ 35.17	$ 38.74
Number of equal annual vesting installments \| Installment				3
Performance-base restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of performance goal				The performance share awards can be earned based on performance against established goals over a three-year performance period.
Performance-base restricted stock [Member] \| Senior Management Employees [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		0
Performance-base restricted stock [Member] \| Senior Management Employees [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted		665,740
TSR Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of performance goal				The 2017 and 2018 performance share awards are based entirely on a TSR (total shareholder return) goal. Performance against the TSR goal is determined by comparing the performance of the Company’s TSR with the TSR performance of the members of the OSX (Oil Service Sector) index for the three-year performance period. The 2019 performance share awards are divided into two independent parts that are subject to two separate performance metrics: 85% with a TSR (total shareholder return) goal and 15% with an internal National Oilwell Varco Value Added (“NVA”) (return on capital metric) goal. Performance against the TSR goal is determined by comparing the performance of the Company’s TSR with the TSR performance of the members of the OSX index for the three-year performance period. The NVA goal is based on the Company’s improvement in NVA from the beginning of the performance period until the end of the performance period. NVA shall be calculated as an amount equal to the Company’s (a) gross cash earnings less (b) average gross operating assets times an amount equal to a required return on assets.
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to nonvested stock options \| $				$ 102
Compensation cost not yet recognized, period for recognition				2 years
TSR [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance shares awarded				85.00%
NVA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance shares awarded				15.00%
2018 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares under stock based compensation				20,200,000
Remaining shares available for future grants under the Plan				10,500,000
2018 Plan [Member] \| Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	65,752
Restricted stock granted fair value \| $ / shares	$ 21.90

Common Stock - Summary of Stock Options (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares under stock option, Beginning of the year	21,009,508	22,472,047	17,439,060
Number of Shares Granted	1,493,576	1,610,599	6,961,041
Number of Shares Forfeited	(944,917)	(1,318,380)	(1,482,531)
Number of Shares Exercised	(248,068)	(1,754,758)	(445,523)
Number of shares under stock option, End of the year	21,310,099	21,009,508	22,472,047
Number of stock options vested and expected to be vest, exercisable	17,796,607	15,223,029	14,309,944
Weighted Average Exercise Price, Beginning of year	$ 48.88	$ 48.99	$ 54.08
Weighted Average Exercise Price, Stock Options Granted	28.72	35.09	36.51
Weighted Average Exercise Price, Stock Options Forfeited	50.57	57.56	55.22
Weighted Average Exercise Price, Stock Options Exercised	29.70	44.12	29.83
Weighted Average Exercise Price, End of the year	47.68	48.88	48.99
Weighted Average Exercise Price, Stock Options Exercisable	$ 50.49	$ 54.13	$ 55.00

Common Stock - Summary of Stock Option Outstanding Information (Detail)	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Avg Remaining Contractual Life	6 years 3 days
Stock Options Outstanding, Shares \| shares	21,310,099
Stock Options Outstanding, Weighted - Average Exercise Price	$ 47.68
Stock Options Exercisable, Shares \| shares	17,796,607
Stock Options Exercisable, Weighted - Average Exercise Price	$ 50.49
Stock option, Minimum Range	28.24
Stock option, Maximum Range	$ 77.99
$28.24 - $55.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Avg Remaining Contractual Life	6 years 2 months 15 days
Stock Options Outstanding, Shares \| shares	15,776,394
Stock Options Outstanding, Weighted - Average Exercise Price	$ 39.77
Stock Options Exercisable, Shares \| shares	12,262,902
Stock Options Exercisable, Weighted - Average Exercise Price	$ 41.58
Stock option, Minimum Range	28.24
Stock option, Maximum Range	$ 55.00
$55.01 - $70.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Avg Remaining Contractual Life	3 years 7 months 24 days
Stock Options Outstanding, Shares \| shares	3,480,067
Stock Options Outstanding, Weighted - Average Exercise Price	$ 66.82
Stock Options Exercisable, Shares \| shares	3,480,067
Stock Options Exercisable, Weighted - Average Exercise Price	$ 66.82
Stock option, Minimum Range	55.01
Stock option, Maximum Range	$ 70.00
$70.01 - $77.99
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Avg Remaining Contractual Life	1 year 8 months 4 days
Stock Options Outstanding, Shares \| shares	2,053,638
Stock Options Outstanding, Weighted - Average Exercise Price	$ 75.96
Stock Options Exercisable, Shares \| shares	2,053,638
Stock Options Exercisable, Weighted - Average Exercise Price	$ 75.96
Stock option, Minimum Range	70.01
Stock option, Maximum Range	$ 77.99

Common Stock - Assumption Used in Determination of Fair Value of Share Based Payment Awards (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected volatility	35.90%	31.80%	36.10%
Risk-free interest rate	2.50%	2.70%	2.20%
Expected dividend yield	0.70%	0.60%	0.60%
Expected term (in years)	4 years 6 months	4 years 3 months 18 days	3 years

Common Stock - Summary of Information and Changes in Stock Options with Regard to Stock Option Plans (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of shares under stock option, Beginning of the year	21,009,508	22,472,047	17,439,060
Number of Shares Granted	1,493,576	1,610,599	6,961,041
Number of Shares Forfeited	(944,917)	(1,318,380)	(1,482,531)
Number of Shares Exercised	(248,068)	(1,754,758)	(445,523)
Number of shares under stock option, End of the year	21,310,099	21,009,508	22,472,047
Number of stock options, Exercisable	17,796,607	15,223,029	14,309,944
Weighted Average Exercise Price, Beginning of year	$ 48.88	$ 48.99	$ 54.08
Weighted Average Exercise Price, Stock Options Granted	28.72	35.09	36.51
Weighted Average Exercise Price, Stock Options Forfeited	50.57	57.56	55.22
Weighted Average Exercise Price, Stock Options Exercised	29.70	44.12	29.83
Weighted Average Exercise Price, End of the year	47.68	48.88	48.99
Weighted Average Exercise Price, Stock Options, Exercisable	$ 50.49	$ 54.13	$ 55.00
Weighted Average Remaining Contractual Term, Outstanding	5 years 4 months 9 days		6 years 3 days
Weighted Average Remaining Contractual Term, Exercisable	4 years 5 months 8 days
Stock Options Aggregate Intrinsic Value, Beginning	$ 458,576
Stock Options Aggregate Intrinsic Value, Ending		$ 458,576

Common Stock - Summary of Information Regarding Outstanding SARs (Detail) - Stock Appreciation Rights (SARs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares Outstanding, Beginning balance	1,399,302	1,493,689
Granted	7,088	14,228
Forfeited	(76,133)	(83,124)
Exercised		(25,491)
Restricted Shares Outstanding, Ending balance	1,330,257	1,399,302
Exercisable at end of year	1,315,701	165,755
Weighted-Average Grant Date Fair Value of Restricted Stock, Beginning Balance	$ 28.49	$ 28.41
Granted	28.72	35.09
Forfeited	29.18	28.32
Exercised		42.61
Weighted-Average Grant Date Fair Value of Restricted Stock, Ending Balance	28.45	28.49
Average Exercise Price, Exercisable at end of year	$ 28.40	$ 28.57

Common Stock - Summary of Information Regarding Outstanding Restricted Shares (Detail) - Restricted Stock and Restricted Stock Units [Member] - $ / shares		12 Months Ended
	Feb. 27, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Shares Outstanding, Beginning balance		5,914,860	4,889,678	4,563,983
Restricted Stock Granted, Shares	2,895,086	3,335,315	2,657,115	1,738,589
Restricted Stock Vested, Shares		(2,901,945)	(1,242,682)	(1,018,206)
Restricted Stock Forfeited, Shares		(73,922)	(389,251)	(394,688)
Restricted Shares Outstanding, Ending balance		6,274,308	5,914,860	4,889,678
Weighted-Average Grant Date Fair Value of Restricted Stock, Beginning Balance		$ 34.41	$ 37.04	$ 41.10
Restricted Stock Granted, Weighted-Average Grant Date Fair Value	$ 28.72	28.52	35.17	38.74
Restricted Stock Vested, Weighted-Average Grant Date Fair Value		25.67	34.86	34.84
Restricted Stock Forfeited, Weighted-Average Grant Date Fair Value		50.57	57.56	55.22
Weighted-Average Grant Date Fair Value of Restricted Stock, Ending Balance		$ 33.10	$ 34.41	$ 37.04

Revenue Recognition - Additional Information (Detail)	12 Months Ended
Revenue Recognition - Additional Information (Detail)	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer	Dec. 31, 2017 USD ($) Customer
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Impairment losses on contract assets \| $	$ 0	$ 0	$ 0
Customer Concentration Risk [Member] \| Revenue [Member]
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Concentration risk, number of customers \| Customer	0	0	0
Concentration risk, percentage	10.00%	10.00%	10.00%

Revenue Recognition - Summary of Changes in Carrying Amount of Contract Assets and Contract Liabilities (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Change in Contract with Customer, Asset and Liability [Abstract]
Balance at December 31, 2018	$ 565
Additions and Milestone Billings	(1,018)
Revenue Recognized	1,131
Currency translation adjustments and other	(35)
Balance at December 31, 2019	643
Balance at December 31, 2018	458
Additions and Milestone Billings	809
Revenue Recognized	(782)
Currency translation adjustments and other	(58)
Balance at December 31, 2019	$ 427

Income Taxes - Components of Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ (7)	$ (5)	$ 23
State	4	(3)	1
Foreign	60	134	161
Total current income tax provision	57	126	185
Deferred:
Federal	(344)	11	(332)
State	(18)		(2)
Foreign	(64)	(74)	(7)
Total deferred income tax provision	(426)	(63)	(341)
Total income tax provision	$ (369)	$ 63	$ (156)

Income Taxes - Difference Between Effective Tax Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal income tax at U.S. statutory rate	$ (1,357)	$ 9	$ (137)
Foreign income tax rate differential	(40)	(3)	(21)
Goodwill impairment	666
Nondeductible expenses	61	20	38
Foreign dividends, net of foreign tax credits	163	27	(132)
Tax rate change on timing differences	1	(7)	(245)
Change in uncertain tax positions	(60)	(5)	81
Prior years taxes	3	(13)	(26)
Tax impact on foreign exchange	(2)	(3)	5
Change in deferred tax valuation allowance	218	49	280
State income taxes - net of federal benefit	(16)	(3)	(1)
Tax exempt income	(6)	(5)
Income tax credits		(3)	(4)
Other			6
Total income tax provision	$ (369)	$ 63	$ (156)

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Tax Credit Carryforward [Line Items]
Effective income tax rate	5.70%	153.70%
Unrecognized tax benefit	$ 38	$ 98	$ 132	$ 78
Decrease in unrecognized tax benefits from resolutions of foreign jurisdiction audit	60	74
Increase in unrecognized tax position from completion of audits of foreign jurisdictions from prior years	10	31	64
Decrease in unrecognized tax benefits is reasonably possible	21
Income tax interest and penalties related to unrecognized tax benefit	0	0	$ 17
Accrued income tax interest and penalties related to unrecognized tax benefit	11	12
Foreign tax credit	702
Net operating loss carry forward	1,213
Tax-deductible goodwill		$ 194
Undistributed earnings of foreign subsidiaries	$ 757
Maximum [Member]
Tax Credit Carryforward [Line Items]
Period of amortization of goodwill	12 years
Carry Forward Expiration Year 2020 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	$ 11
Carry Forward Expiration Year 2022 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	141
Carry Forward Expiration Year 2026 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	285
Carry Forward Expiration Year 2027 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	142
Carry Forward Expiration Year 2028 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	88
Carry Forward Expiration Year 2029 [Member]
Tax Credit Carryforward [Line Items]
Net operating loss carry forward	$ 35

Income Taxes - Significant Components of Deferred Tax Assets and Liability (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Allowances and operating liabilities	$ 395	$ 293
Net operating loss carryforwards	270	182
Stock Compensation	69	66
Tax credit carryforwards	702	768
Other	60	59
Valuation allowance	(1,175)	(955)
Total deferred tax assets	321	413
Deferred tax liabilities:
Tax over book depreciation	115	139
Capital leases	86
Intangible assets	110	688
Deferred income	65	70
Accrued tax on unremitted earnings	33	17
Other	52	52
Total deferred tax liabilities	461	966
Net deferred tax liability	$ 140	$ 553

Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefit at beginning of year	$ 98	$ 132	$ 78
Gross increase for current period tax positions		15	10
Gross increase for tax positions in prior years	10	31	64
Gross decrease for tax positions in prior years	(60)	(10)	(14)
Cash Settlements	(3)	(69)
Lapse of statute of limitations	(7)	(1)	(6)
Unrecognized tax benefit at end of year	$ 38	$ 98	$ 132

Income Taxes - Summary of Net Operating Loss Carryforwards (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	$ 1,213
Tax Effected NOL	270
Valuation Allowance (VA)	(269)
Tax Effected NOL Net of VA	1
Federal [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	234
Tax Effected NOL	49
Valuation Allowance (VA)	(49)
State [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	154
Tax Effected NOL	9
Valuation Allowance (VA)	(9)
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	825
Tax Effected NOL	212
Valuation Allowance (VA)	(211)
Tax Effected NOL Net of VA	1
2020 - 2024 Expiration [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	83
2020 - 2024 Expiration [Member] \| Federal [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	6
2020 - 2024 Expiration [Member] \| State [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	4
2020 - 2024 Expiration [Member] \| Foreign [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	73
2025 - 2039 Expiration [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	526
2025 - 2039 Expiration [Member] \| Federal [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	30
2025 - 2039 Expiration [Member] \| State [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	150
2025 - 2039 Expiration [Member] \| Foreign [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	346
Unlimited Expiration [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	604
Unlimited Expiration [Member] \| Federal [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	198
Unlimited Expiration [Member] \| Foreign [Member]
Operating Loss Carryforwards [Line Items]
Total Net Operating Loss (NOL)	$ 406

Business Segments and Geographic Areas - Revenues by Country Based on Sales Destination of Products or Services (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 2,281	$ 2,126	$ 2,132	$ 1,940	$ 2,398	$ 2,154	$ 2,106	$ 1,795	$ 8,479	$ 8,453	$ 7,304
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									3,112	3,480	2,760
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									269	415	498
Saudi Arabia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									436	444	310
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									285	231	298
Norway [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									512	368	295
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									247	302	286
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									333	309	279
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									69	169	261
United Arab Emirates [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									224	248	223
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									473	321	188
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									$ 2,519	$ 2,166	$ 1,906

Business Segments and Geographic Areas - Plant, Property and Equipment by Country Based on the Location (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 2,354	$ 2,797
United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	1,257	1,603
Brazil [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	194	217
United Kingdom [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	112	125
Denmark [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	111	119
South Korea [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	77	91
Russia [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	16	69
Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	77	79
Mexico [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	43	48
United Arab Emirates [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	52	60
Singapore [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	28	47
Other Countries [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 387	$ 339

Business Segments and Geographic Areas - Business Segments (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 2,281	$ 2,126	$ 2,132	$ 1,940	$ 2,398	$ 2,154	$ 2,106	$ 1,795	$ 8,479	$ 8,453	$ 7,304
Operating profit (loss)									(6,279)	211	(277)
Capital expenditures									233	244	192
Depreciation and amortization									533	690	698
Goodwill	2,807				6,264				2,807	6,264	6,227
Total assets	13,149				19,796				13,149	19,796	20,206
Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Goodwill	843				3,011				843	3,011	2,956
Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Goodwill	1,054				2,041				1,054	2,041	2,122
Rig Technologies [Member]
Segment Reporting Information [Line Items]
Goodwill	910				1,212				910	1,212	1,149
Eliminations and Corporate Costs [Member]
Segment Reporting Information [Line Items]
Revenue									(188)	(288)	(197)
Operating profit (loss)									(270)	(299)	(259)
Capital expenditures									15	5	8
Depreciation and amortization									12	14	16
Total assets	1,487				1,728				1,487	1,728	1,951
Operating Segments [Member] \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Revenue									3,214	3,235	2,577
Operating profit (loss)									(3,551)	131	(102)
Capital expenditures									123	135	99
Depreciation and amortization									284	374	379
Goodwill	843				3,011				843	3,011	2,956
Total assets	4,078				7,929				4,078	7,929	7,848
Operating Segments [Member] \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Revenue									2,771	2,931	2,672
Operating profit (loss)									(1,934)	166	98
Capital expenditures									64	87	69
Depreciation and amortization									150	212	215
Goodwill	1,054				2,041				1,054	2,041	2,122
Total assets	3,826				6,233				3,826	6,233	5,782
Operating Segments [Member] \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Revenue									2,682	2,575	2,252
Operating profit (loss)									(524)	213	(14)
Capital expenditures									31	17	16
Depreciation and amortization									87	90	88
Goodwill	910				1,212				910	1,212	1,149
Total assets	$ 3,758				$ 3,906				$ 3,758	$ 3,906	$ 4,625

Business Segments and Geographic Areas - Business Segments (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (6,279)	$ 211	$ (277)
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	3,565
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	1,865
Goodwill Indefinite Lived And Finite Lived Intangible And Long Lived Tangible Assets \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	389
Inventory Charges \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	130		4
Inventory Charges \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	148		(6)
Inventory Charges \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	355		110
Voluntary Early Retirement Program \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	64
Voluntary Early Retirement Program \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	30
Voluntary Early Retirement Program \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)	$ 37
Severance, Facility Closures And Other Items \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)		28
Non-operational Credits Elimination and Corporate Costs [Member] \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)		$ (18)
Severance And Facility Closures Cost \| Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)			18
Severance And Facility Closures Cost \| Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)			32
Severance And Facility Closures Cost \| Rig Technologies [Member]
Segment Reporting Information [Line Items]
Operating profit (loss)			$ 20

Quarterly Financial Data (Unaudited) - Summarized Quarterly Results (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 2,281	$ 2,126	$ 2,132	$ 1,940	$ 2,398	$ 2,154	$ 2,106	$ 1,795	$ 8,479	$ 8,453	$ 7,304
Gross profit (loss)	376	151	62	256	409	393	355	287	845	1,444	892
Net profit (loss) attributable to Company	$ (385)	$ (244)	$ (5,389)	$ (77)	$ 12	$ 1	$ 24	$ (68)	$ (6,095)	$ (31)	$ (237)
Basic loss attributable to Company per share	$ (1.01)	$ (0.64)	$ (14.11)	$ (0.20)	$ 0.03	$ 0.00	$ 0.06	$ (0.18)	$ (15.96)	$ (0.08)	$ (0.63)
Diluted loss attributable to Company per share	(1.01)	(0.64)	(14.11)	(0.20)	0.03	0.00	0.06	(0.18)	(15.96)	(0.08)	(0.63)
Cash dividends per share	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.20	0.20	0.20
Basic	(1.01)	(0.64)	(14.11)	(0.20)	0.03	0.00	0.06	(0.18)	(15.96)	(0.08)	(0.63)
Diluted	$ (1.01)	$ (0.64)	$ (14.11)	$ (0.20)	$ 0.03	$ 0.00	$ 0.06	$ (0.18)	$ (15.96)	$ (0.08)	$ (0.63)

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance beginning of year	$ 161	$ 187	$ 209
Additions (Deductions) charged to costs and expenses	21	17	6
Charge off's and other	(50)	(43)	(28)
Balance end of year	132	161	187
Reserve for Excess and Obsolete Inventories [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance beginning of year	644	800	1,017
Additions (Deductions) charged to costs and expenses	659	49	114
Charge off's and other	(460)	(205)	(331)
Balance end of year	843	644	800
Valuation Allowance for Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance beginning of year	955	1,202	544
Additions (Deductions) charged to costs and expenses	218	49	280
Charge off's and other	2	(296)	378
Balance end of year	1,175	955	1,202
Environmental Accruals [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance beginning of year	66	38	43
Additions (Deductions) charged to costs and expenses	57	37	2
Charge off's and other	(19)	(9)	(7)
Balance end of year	104	66	38
Warranty Reserve [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance beginning of year	105	135	172
Additions (Deductions) charged to costs and expenses	41	38	46
Charge off's and other	(56)	(68)	(83)
Balance end of year	$ 90	$ 105	$ 135

Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts (Detail) ₽ in Millions, € in Millions, ₩ in Millions, ¥ in Millions, £ in Millions, kr in Millions, kr in Millions, R in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions	Dec. 31, 2019 USD ($)	Dec. 31, 2019 KRW (₩)	Dec. 31, 2019 NOK (kr)	Dec. 31, 2019 RUB (₽)	Dec. 31, 2019 EUR (€)	Dec. 31, 2019 ZAR (R)	Dec. 31, 2019 MXN ($)	Dec. 31, 2019 SGD ($)	Dec. 31, 2019 JPY (¥)	Dec. 31, 2019 DKK (kr)	Dec. 31, 2019 GBP (£)	Dec. 31, 2019 CAD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 NOK (kr)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 ZAR (R)	Dec. 31, 2018 MXN ($)	Dec. 31, 2018 JPY (¥)	Dec. 31, 2018 DKK (kr)	Dec. 31, 2018 GBP (£)
Forward Contracts [Member]
Derivative [Line Items]
Foreign currency, Cash flow hedging	$ 686	₩ 17,600	kr 5,377	₽ 1,012	€ 188	R 124	$ 115	$ 42	¥ 36	kr 21	£ 20	$ 3	$ 631	kr 5,229	€ 172	R 124	$ 204	¥ 121	kr 35	£ 12

Summary of Significant Accounting Policies - Additional Information (Detail 1) $ in Millions	Dec. 31, 2019 USD ($)
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations	$ 4,286
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations, period	12 months
Remaining performance obligations	$ 1,084
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations, period	12 months
Remaining performance obligations	$ 3,202

Summary of Significant Accounting Policies - Changes in Carrying Amount of Service and Product Warranties (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Product Warranties Disclosures [Abstract]
Beginning Balance	$ 105	$ 135
Net provisions for warranties issued during the year	41	38
Amounts incurred	(56)	(67)
Currency translation adjustments		(1)
Ending Balance	$ 90	$ 105

Asset Impairments - Goodwill Identified, by Segment (Parenthetical) (Detail) $ in Millions	Dec. 31, 2019 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Accumulated goodwill impairment	$ 5,966

Business Segments and Geographic Areas - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 Segment
Segment Reporting [Abstract]
Number of reportable segments	3