Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2013	Aug. 01, 2013
Document Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Trading Symbol	NOV
Entity Registrant Name	NATIONAL OILWELL VARCO INC
Entity Central Index Key	0001021860
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		427,518,321

CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,327	$ 3,319
Receivables, net	4,424	4,320
Inventories, net	6,083	5,891
Costs in excess of billings	1,448	1,225
Deferred income taxes	360	349
Prepaid and other current assets	579	574
Total current assets	15,221	15,678
Property, plant and equipment, net	3,210	2,945
Deferred income taxes	395	413
Goodwill	8,997	7,172
Intangibles, net	5,305	4,743
Investment in unconsolidated affiliates	357	393
Other assets	108	140
Total assets	33,593	31,484
Current liabilities:
Accounts payable	1,232	1,200
Accrued liabilities	2,681	2,571
Billings in excess of costs	1,159	1,189
Current portion of long-term debt and short-term borrowings		1
Accrued income taxes	248	355
Deferred income taxes	299	333
Total current liabilities	5,619	5,649
Long-term debt	4,120	3,148
Deferred income taxes	2,458	1,997
Other liabilities	445	334
Total liabilities	12,642	11,128
Commitments and contingencies
Stockholders' equity:
Common stock - par value $.01; 1 billion shares authorized; 427,402,817 and 426,928,322 shares issued and outstanding at June 30, 2013 and December 31, 2012	4	4
Additional paid-in capital	8,805	8,743
Accumulated other comprehensive income (loss)	(201)	107
Retained earnings	12,251	11,385
Total Company stockholders' equity	20,859	20,239
Noncontrolling interests	92	117
Total stockholders' equity	20,951	20,356
Total liabilities and stockholders' equity	$ 33,593	$ 31,484

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
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	427,402,817	426,928,322
Common stock, shares outstanding	427,402,817	426,928,322

CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Revenue	$ 5,601	$ 4,734	$ 10,908	$ 9,037
Cost of revenue	4,335	3,428	8,378	6,464
Gross profit	1,266	1,306	2,530	2,573
Selling, general and administrative	497	427	1,010	817
Operating profit	769	879	1,520	1,756
Interest and financial costs	(30)	(9)	(58)	(17)
Interest income	3	3	6	6
Equity income in unconsolidated affiliates	15	19	34	36
Other income (expense), net	13	(5)	(8)	(21)
Income before income taxes	770	887	1,494	1,760
Provision for income taxes	239	285	463	554
Net income	531	602	1,031	1,206
Net loss attributable to noncontrolling interests		(3)	(2)	(5)
Net income attributable to Company	$ 531	$ 605	$ 1,033	$ 1,211
Net income attributable to Company per share:
Basic	$ 1.25	$ 1.42	$ 2.42	$ 2.85
Diluted	$ 1.24	$ 1.42	$ 2.41	$ 2.84
Cash dividends per share	$ 0.26	$ 0.12	$ 0.39	$ 0.24
Weighted average shares outstanding:
Basic	426	425	426	424
Diluted	428	427	428	426

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 531	$ 602	$ 1,031	$ 1,206
Currency translation adjustments	(121)	(121)	(238)	(56)
Changes in derivative financial instruments, net of tax	(22)	(53)	(70)	10
Comprehensive income	388	428	723	1,160
Comprehensive loss attributable to noncontrolling interest		(3)	(2)	(5)
Comprehensive income attributable to Company	$ 388	$ 431	$ 725	$ 1,165

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 1,031	$ 1,206
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	364	305
Deferred income taxes	(115)	51
Equity income in unconsolidated affiliates	(34)	(36)
Dividend from unconsolidated affiliate	66	61
Other, net	37	43
Change in operating assets and liabilities, net of acquisitions:
Receivables	4	(162)
Inventories	(13)	(785)
Costs in excess of billings	(222)	(360)
Prepaid and other current assets	24	(168)
Accounts payable	(38)	107
Billings in excess of costs	(30)	210
Income taxes payable	(105)	(557)
Other assets/liabilities, net	(99)	(232)
Net cash provided by (used in) operating activities	870	(317)
Cash flows from investing activities:
Purchases of property, plant and equipment	(320)	(253)
Business acquisitions, net of cash acquired	(2,390)	(2,014)
Other	46	17
Net cash used in investing activities	(2,664)	(2,250)
Cash flows from financing activities:
Borrowings against lines of credit and other debt	1,556	939
Repayments on debt	(586)	(2)
Cash dividends paid	(167)	(102)
Proceeds from stock options exercised	12	93
Other	13	27
Net cash provided by financing activities	828	955
Effect of exchange rates on cash	(26)	(6)
Decrease in cash and cash equivalents	(992)	(1,618)
Cash and cash equivalents, beginning of period	3,319	3,535
Cash and cash equivalents, end of period	2,327	1,917
Cash payments during the period for:
Interest	57	12
Income taxes	$ 668	$ 1,021

Basis of Presentation	6 Months Ended
Basis of Presentation	Jun. 30, 2013
Accounting Policies [Abstract]
Basis of Presentation	1. Basis of Presentation The preparation of financial statements in conformity with generally accepted accounting principles (“GAAP”) 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. Actual results could differ from those estimates. The accompanying unaudited consolidated financial statements of National Oilwell Varco, Inc. (the “Company”) present information in accordance with GAAP in the United States for interim financial information and the instructions to Form 10-Q and applicable rules of Regulation S-X. They do not include all information or footnotes required by GAAP in the United States for complete consolidated financial statements and should be read in conjunction with our 2012 Annual Report on Form 10-K. In our opinion, the consolidated financial statements include all adjustments, all of which are of a normal recurring nature, necessary for a fair presentation of the results for the interim periods. The results of operations for the three and six months ended June 30, 2013 are not necessarily indicative of the results to be expected for the full year. Fair Value of Financial Instruments The carrying amounts of 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. See Note 7 for the fair value of long-term debt and Note 10 for the fair value of derivative financial instruments.

Inventories, net

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Inventories, net

2. Inventories, net

Inventories consist of (in millions):


	June 30,		December 31,
	2013		2012
Raw materials and supplies	$	1,225	$	1,268
Work in process		1,015		905
Finished goods and purchased products		3,843		3,718

Total	$	6,083	$	5,891

Accrued Liabilities

6 Months Ended

Jun. 30, 2013

Payables And Accruals [Abstract]

Accrued Liabilities

3. Accrued Liabilities

Accrued liabilities consist of (in millions):


	June 30,		December 31,
	2013		2012
Customer prepayments and billings	$	674	$	699
Accrued vendor costs		633		444
Compensation		389		511
Warranty		205		194
Taxes (non income)		125		150
Insurance		119		108
Fair value of derivatives		59		18
Interest		12		14
Other		465		433

Total	$	2,681	$	2,571

Service and Product Warranties

The Company provides certain service and product warranties. The Company accrues liabilities under service and warranty policies based upon specific claims and a review of historical warranty and service claim experience in accordance with Accounting Standards Codification (“ASC”) Topic 450 “Contingencies” (“ASC Topic 450”). 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, 2012	$	194

Net provisions for warranties issued during the year		45
Amounts incurred		(38	)
Currency translation adjustments and other		4

Balance at June 30, 2013	$	205

Costs and Estimated Earnings on Uncompleted Contracts

6 Months Ended

Jun. 30, 2013

Text Block [Abstract]

Costs and Estimated Earnings on Uncompleted Contracts

4. Costs and Estimated Earnings on Uncompleted Contracts

Costs and estimated earnings on uncompleted contracts consist of (in millions):


	June 30,			December 31,
	2013			2012
Costs incurred on uncompleted contracts	$	6,942		$	5,731
Estimated earnings		3,527			3,160

		10,469			8,891
Less: Billings to date		10,180			8,855

	$	289		$	36

Costs and estimated earnings in excess of billings on uncompleted contracts	$	1,448		$	1,225
Billings in excess of costs and estimated earnings on uncompleted contracts		(1,159	)		(1,189	)

	$	289		$	36

Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2013

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

5. 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, 2012	$	132		$	42		$	(67	)	$	107
Accumulated other comprehensive income (loss) before reclassifications		(213	)		(68	)		—			(281	)
Amounts reclassified from accumulated other comprehensive income (loss)		(25	)		(2	)		—			(27	)

Balance at June 30, 2013	$	(106	)	$	(28	)	$	(67	)	$	(201	)

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


	Three Months Ended June 30,
	2013											2012
	Currency			Derivative			Defined					Currency		Derivative			Defined
	Translation			Financial			Benefit					Translation		Financial			Benefit
	Adjustments			Instruments			Plans		Total			Adjustments		Instruments			Plans		Total
Revenue	$	—		$	(2	)	$	—	$	(2	)	$	—	$	2		$	—	$	2
Cost of revenue		—			4			—		4			—		5			—		5
Other income (expense), net		(25	)		—			—		(25	)		—		—			—		—
Tax effect		—			—			—		—			—		(2	)		—		(2	)

	$	(25	)	$	2		$	—	$	(23	)	$	—	$	5		$	—	$	5


	Six Months Ended June 30,
	2013											2012
	Currency			Derivative			Defined					Currency		Derivative			Defined
	Translation			Financial			Benefit					Translation		Financial			Benefit
	Adjustments			Instruments			Plans		Total			Adjustments		Instruments			Plans		Total
Revenue	$	—		$	(4	)	$	—	$	(4	)	$	—	$	6		$	—	$	6
Cost of revenue		—			1			—		1			—		11			—		11
Other income (expense), net		(25	)		—			—		(25	)		—		—			—		—
Tax effect		—			1			—		1			—		(5	)		—		(5	)

	$	(25	)	$	(2	)	$	—	$	(27	)	$	—	$	12		$	—	$	12

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 in accordance with ASC Topic 830 “Foreign Currency Matters” (“ASC Topic 830”). For the three and six months ended June 30, 2013 and 2012 a majority of these local currencies weakened against the U.S. dollar. This resulted in net other comprehensive loss of $96 million and $213 million, for the three and six months ended June 30, 2013, respectively, upon the translation from local currencies to the U.S. dollar. Due to the sale of a foreign subsidiary during the second quarter of 2013, $25 million of currency translation gains were reclassified from accumulated other comprehensive income (loss) into other income (expense), net in the Consolidated Statement of Income. For the three and six months ended June 30, 2012, this resulted in other comprehensive loss of $121 million and $56 million, respectively.

The effect of changes in the fair values of derivatives designated as cash flow hedges are accumulated in Other Comprehensive Income or Loss, net of tax, until the underlying transactions to which they are designed to hedge are realized. The movement in Other Comprehensive Income or Loss from period to period will be the result of the combination of changes in fair value for open derivatives and the outflow of Other Comprehensive Income or Loss related to cumulative changes in the fair value of derivatives that have settled in the current or prior periods. The accumulated effect was Other Comprehensive Loss of $22 million (net of tax $8 million) and $70 million (net of tax of $27 million) for the three and six months ended June 30, 2013, respectively. The accumulated effect was Other Comprehensive Loss of $53 million (net of tax of $22 million) for the three months ended June 30, 2012 and Other Comprehensive Income of $10 million (net of tax of $4 million) for the six months ended June 30, 2012.

Business Segments

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Business Segments

6. Business Segments

Operating results by segment are as follows (in millions):


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Revenue:
Rig Technology	$	2,833		$	2,405		$	5,461		$	4,664
Petroleum Services & Supplies		1,749			1,776			3,450			3,480
Distribution & Transmission		1,295			780			2,522			1,344
Eliminations		(276	)		(227	)		(525	)		(451	)

Total Revenue	$	5,601		$	4,734		$	10,908		$	9,037

Operating Profit:
Rig Technology	$	574		$	554		$	1,124		$	1,101
Petroleum Services & Supplies		273			390			528			778
Distribution & Transmission		58			46			121			89
Unallocated expenses and eliminations		(136	)		(111	)		(253	)		(212	)

Total Operating Profit	$	769		$	879		$	1,520		$	1,756

Operating Profit %:
Rig Technology		20.3	%		23.0	%		20.6	%		23.6	%
Petroleum Services & Supplies		15.6	%		22.0	%		15.3	%		22.4	%
Distribution & Transmission		4.5	%		5.9	%		4.8	%		6.6	%
Total Operating Profit %		13.7	%		18.6	%		13.9	%		19.4	%

Included in operating profit are other costs related to acquisitions, such as administration costs and the amortization of backlog and inventory that was stepped up to fair value during purchase accounting. Other costs by segment are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Other costs:
Rig Technology	$	13	$	17	$	20	$	21
Petroleum Services & Supplies		31		3		87		3
Distribution & Transmission		13		8		15		8

Total other costs	$	57	$	28	$	122	$	32

The Company had revenues of 10% of total revenue from one of its customers for each of the three and six months ended June 30, 2013, respectively and 10% for each of the three and six months ended June 30, 2012, respectively. This customer, Samsung Heavy Industries, is a shipyard acting as a general contractor for its customers, who are drillship owners and drilling contractors. This shipyard’s customers have specified that the Company’s drilling equipment be installed on their drillships and have required the shipyard to issue contracts to the Company.

Debt

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Debt

7. Debt

Debt consists of (in millions):


	June 30, 2013		December 31, 2012
Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015	$	151	$	151
Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017		500		500
Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022		1,395		1,395
Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042		1,096		1,096
Revolving Credit Facility, expires September 28, 2017		970		—
Other		8		7

Total debt		4,120		3,149
Less current portion		—		1

Long-term debt	$	4,120	$	3,148

The Company has a $3.5 billion, five-year unsecured revolving credit facility which expires September 28, 2017. At June 30, 2013, there were $970 million in outstanding borrowings against the credit facility, and there were $858 million in outstanding letters of credit issued under the credit facility, resulting in $1,672 million of funds available under this revolving credit facility. Interest under this multicurrency facility is based upon LIBOR, NIBOR or EURIBOR plus 0.875% subject to a ratings-based grid, or the prime rate. The credit facility contains a financial covenant regarding maximum debt to capitalization and the Company was in compliance at June 30, 2013.

The Company also had $2,641 million of additional outstanding letters of credit at June 30, 2013, primarily in Norway, that are under various bilateral committed letter of credit facilities. Other letters of credit are issued as bid bonds and performance bonds.

The fair value of the Company’s Senior Notes are estimated using Level 2 inputs in the fair value hierarchy and is based on quoted prices for those or similar instruments. At June 30, 2013 and December 31, 2012, the fair value of the Company’s unsecured Senior Notes approximated $2,938 million and $3,190, respectively. At June 30, 2013 and December 31, 2012, the carrying value of the Company’s unsecured Senior Notes was $3,142 million. The carrying value of the Company’s variable rate borrowings approximates fair value.

Tax

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

Tax

8. Tax

The effective tax rate for the three and six months ended June 30, 2013 was 31.0% and 31.0%, respectively, compared to 32.1% and 31.5% for the same period in 2012. Compared to the U.S. statutory rate, the effective tax rate was positively impacted in the periods by the effect of lower tax rates on income earned in foreign jurisdictions, and the deduction in the U.S. for manufacturing activities. The effective tax rate for 2013 was negatively impacted by foreign exchange gains for tax reporting in Norway, while 2012 was positively impacted by foreign exchange losses for tax reporting in Norway.

The difference between the effective tax rate reflected in the provision for income taxes and the U.S. federal statutory rate of 35% was as follows (in millions):


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Federal income tax at U.S. federal statutory rate	$	270		$	310		$	523		$	616
Foreign income tax rate differential		(65	)		(57	)		(122	)		(80	)
State income tax, net of federal benefit		4			9			12			17
Nondeductible expenses		8			10			16			23
Tax benefit of manufacturing deduction		(8	)		(9	)		(16	)		(18	)
Foreign dividends, net of foreign tax credits		8			14			12			20
Tax impact of foreign exchange		21			12			39			(18	)
Other		1			(4	)		(1	)		(6	)

Provision for income taxes	$	239		$	285		$	463		$	554

The balance of unrecognized tax benefits at June 30, 2013 was $128 million, $55 million of which if ultimately realized, would be recorded as income tax benefit. The Company recognized no material changes in the balance of unrecognized tax benefits for the three and six months ended June 30, 2013.

The Company does not anticipate that its total unrecognized tax benefits will significantly change due to the settlement of audits or the expiration of statutes of limitation within 12 months of this reporting date.

The Company is subject to taxation in the U.S., various states and foreign jurisdictions. The Company has significant operations in the United States, Canada, the United Kingdom, the Netherlands and Norway. Tax years that remain subject to examination by major tax jurisdiction vary by legal entity, but are generally open in the U.S. for tax years after 2007 and outside the U.S. for tax years after 2005.

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.

Stock-Based Compensation	6 Months Ended
Stock-Based Compensation	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	9. Stock-Based Compensation The Company has a stock-based compensation plan known as the National Oilwell Varco, Inc. Long-Term Incentive Plan (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. The number of shares authorized under the Plan was increased during the second quarter of 2013 and is 39.5 million. At June 30, 2013, 14,182,083 shares remain available for future grants under the Plan, all of which are available for grants of stock options, performance-based share awards, restricted stock awards, phantom shares, stock payments and stock appreciation rights. During the six months ended June 30, 2013, the Company concluded that the performance conditions relating to the performance-based restricted stock awards granted on February 16, 2010 were not met. As a result, the Company reversed $8 million in previously recognized stock-based compensation expense related to performance-based restricted stock awards that did not vest. Total stock based compensation for all stock-based compensation arrangements under the Plan was $25 million and $42 million for the three and six months ended June 30, 2013, respectively, and $22 million and $34 million for the three and six months ended June 30, 2012, respectively. The total income tax benefit recognized in the Consolidated Statements of Income for all stock-based compensation arrangements under the Plan was $8 million and $13 million for the three and six months ended June 30, 2013, respectively, and $8 million and $11 million for the three and six months ended June 30, 2012, respectively. During the six months ended June 30, 2013, the Company granted 2,819,806 stock options with a fair value of $24.10 per share, 540,194 shares of restricted stock and restricted stock units with a fair value of $69.33 per share and 16,702 shares of restricted stock with a fair value of $69.17. In addition, the Company granted performance share awards to senior management employees with potential payouts varying from zero to 398,160 shares. The stock options were granted February 15, 2013 with an exercise price of $69.33. These options generally vest over a three-year period from the grant date. The restricted stock and restricted stock units were granted February 15, 2013 and vest on the third anniversary of the date of grant, except for a special grant of 16,352 restricted stock units which vest on the second anniversary of the date of grant (subject to the satisfaction of a performance condition). On May 22, 2013, the 16,702 restricted stock awards, with a fair value of $69.17, were granted to the non-employee members of the board of directors. These restricted stock awards vest in equal thirds over three years on the anniversary of the grant date. The performance share awards were granted on March 22, 2013 and can be earned based on performance against established goals over a three-year performance period. The performance share awards are divided into two equal, independent parts that are subject to two separate performance metrics: 50% with a TSR (total shareholder return) goal (the “TSR Award”) and 50% with an internal ROC (return on capital) goal (the “ROC Award”). 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. Performance against the ROC goal is determined by comparing the performance of the Company’s actual ROC performance average for each of the three years of the performance period against the ROC goal set by the Company’s Compensation Committee.

Derivative Financial Instruments

6 Months Ended

Jun. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

10. Derivative Financial Instruments

ASC Topic 815, “Derivatives and Hedging” (“ASC Topic 815”) requires a company to recognize all of its derivative instruments as either assets or liabilities in the Consolidated Balance Sheet at fair value. The accounting for changes in the fair value (i.e., gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and further, on the type of hedging relationship. For those derivative instruments that are designated and qualify as hedging instruments, a company must designate the hedging instrument, based upon the exposure being hedged, as a fair value hedge, cash flow hedge, or a hedge of a net investment in a foreign operation.

The Company is exposed to certain risks relating to its ongoing business operations. The primary risk managed by using derivative instruments is foreign currency exchange rate risk. Forward contracts against various foreign currencies are entered into 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). In addition, the Company will enter into non-designated forward contracts against various foreign currencies to manage the foreign currency exchange rate risk on recognized nonfunctional currency monetary accounts (non-designated hedge).

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 2 and 24 months, but may have longer terms depending on the underlying cash flows being hedged, typically related to the projects in our backlog. The Company may also use interest rate contracts to mitigate its exposure to changes in interest rates on anticipated long-term debt issuances.

At June 30, 2013, the Company has determined that the fair value of its derivative financial instruments representing assets of $34 million and liabilities of $74 million (primarily currency related derivatives) are determined using level 2 inputs (inputs other than quoted prices in active markets for identical assets and liabilities that are observable either directly or indirectly for substantially the full term of the asset or liability) in the fair value hierarchy as the fair value is based on publicly available foreign exchange and interest rates at each financial reporting date. At June 30, 2013, the net fair value of the Company’s foreign currency forward contracts totaled a net liability of $40 million.

At June 30, 2013, the Company did not have any interest rate swaps and its financial instruments do not contain any credit-risk-related or other contingent features that could cause accelerated payments when the Company’s financial instruments are in net liability positions. We do not use derivative financial instruments for trading or speculative purposes.

Cash Flow Hedging Strategy

To protect against the volatility of forecasted foreign currency cash flows resulting from forecasted revenues and expenses, the Company has instituted a cash flow hedging program. The Company hedges portions of its forecasted revenues and expenses denominated in nonfunctional currencies with forward contracts. When the U.S. dollar strengthens against the foreign currencies, the decrease in present value of future foreign currency revenues and expenses is offset by gains in the fair value of the forward contracts designated as hedges. Conversely, when the U.S. dollar weakens, the increase in the present value of future foreign currency cash flows is offset by losses in the fair value of the forward contracts.

For derivative instruments that are designated and qualify as a cash flow hedge (i.e., hedging the exposure to variability in expected future cash flows that is subject to a particular currency risk), the effective portion of the gain or loss on the derivative instrument is reported as a component of Other Comprehensive Income 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 remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any (i.e., the ineffective portion), or hedge components excluded from the assessment of effectiveness, is recognized in the Consolidated Statements of Income during the current period.

The Company had the following outstanding foreign currency forward contracts that were entered into to hedge nonfunctional currency cash flows from forecasted revenues and expenses (in millions):


	Currency Denomination
Foreign Currency	June 30, 2013			December 31, 2012
Norwegian Krone		NOK	9,440	NOK	6,281
U.S. Dollar		$	509	$	331
Euro		€	376	€	389
Danish Krone		DKK	195	DKK	134
British Pound Sterling		£	34	£	6
Singapore Dollar		SGD	16	SGD	14

Non-designated Hedging Strategy

The Company enters into forward exchange contracts to hedge certain nonfunctional currency monetary accounts. The purpose of the Company’s foreign currency hedging activities is to protect the Company from risk that the eventual U.S. dollar equivalent cash flows from the nonfunctional currency monetary accounts will be adversely affected by changes in the exchange rates.

For derivative instruments that are non-designated, the gain or loss on the derivative instrument subject to the hedged risk (i.e., nonfunctional currency monetary accounts) is recognized in other income (expense), net in current earnings.

The Company had the following outstanding foreign currency forward contracts that hedge the fair value of nonfunctional currency monetary accounts (in millions):


	Currency Denomination
Foreign Currency	June 30, 2013		December 31, 2012
Norwegian Krone	NOK	2,979	NOK	1,684
Russian Ruble	RUB	1,841	RUB	1,467
U.S. Dollar	$	941	$	967
Euro	€	191	€	225
Danish Krone	DKK	183	DKK	177
Brazilian Real	BRL	172	BRL	135
Singapore Dollar	SGD	16	SGD	24
British Pound Sterling	£	11	£	9
Swedish Krone	SEK	1	SEK	5

The Company has the following gross fair values of its derivative instruments and their balance sheet classifications:

NATIONAL OILWELL VARCO, INC.

Fair Values of Derivative Instruments

(In millions)


	Asset Derivatives					Liability Derivatives
		Fair Value					Fair Value
	Balance Sheet Location	June 30, 2013		December 31, 2012		Balance Sheet Location	June 30, 2013		December 31, 2012
Derivatives designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	12	$	57	Accrued liabilities	$	32	$	5
Foreign exchange contracts	Other Assets		2		24	Other Liabilities		15		1

Total derivatives designated as hedging instruments under ASC Topic 815		$	14	$	81		$	47	$	6

Derivatives not designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	20	$	24	Accrued liabilities	$	27	$	13

Total derivatives not designated as hedging instruments under ASC Topic 815		$	20	$	24		$	27	$	13

Total derivatives		$	34	$	105		$	74	$	19

The Effect of Derivative Instruments on the Consolidated Statements of Income

($ in millions)


Derivatives in ASC Topic 815 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) (a)						Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing) (b)
	Six Months Ended June 30,							Six Months Ended June 30,							Six Months Ended June 30,
	2013			2012				2013			2012				2013		2012
							Revenue		4			(6	)
Foreign exchange contracts		(95	)		(5	)	Cost of revenue		(1	)		(11	)	Other income (expense), net		5		4

Total		(95	)		(5	)			3			(17	)			5		4


Derivatives Not Designated as Hedging Instruments under ASC Topic 815	Location of Gain (Loss) Recognized in Income on Derivative	Amount of Gain (Loss) Recognized in Income on Derivative
		Six Months Ended June 30,
		2013		2012
Foreign exchange contracts	Other income (expense), net		12		13

Total			12		13

(a)	The Company expects that $24 million of the Accumulated Other Comprehensive Income (Loss) will be reclassified into earnings within the next twelve months with an offset by gains from the underlying transactions resulting in no impact to earnings or cash flow.

(b)

The amount of gain (loss) recognized in income represents nil and $(1) million related to the ineffective portion of the hedging relationships for the six months ended June 30, 2013 and 2012, respectively, and $5 million related to the amount excluded from the assessment of the hedge effectiveness for each of the six months ended June 30, 2013 and 2012, respectively.

Net Income Attributable to Company Per Share

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Net Income Attributable to Company Per Share

11. Net Income 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):


	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Company	$	531	$	605	$	1,033	$	1,211

Denominator:
Basic—weighted average common shares outstanding		426		425		426		424
Dilutive effect of employee stock options and other unvested stock awards		2		2		2		2

Diluted outstanding shares		428		427		428		426

Net income attributable to Company per share:
Basic	$	1.25	$	1.42	$	2.42	$	2.85

Diluted	$	1.24	$	1.42	$	2.41	$	2.84

Cash dividends per share	$	0.26	$	0.12	$	0.39	$	0.24

ASC Topic 260, “Earnings Per Share” (“ASC Topic 260”) requires companies with unvested participating securities to utilize a two-class method for the computation of Net income attributable to Company per share. The two-class method requires a portion of Net income attributable to Company to be allocated to participating securities, which are unvested awards of share-based payments with non-forfeitable rights to receive dividends or dividend equivalents, if declared. Net income attributable to Company allocated to these participating securities was immaterial for the three and six months ended June 30, 2013 and 2012 and therefore not excluded from Net income attributable to Company per share calculation.

In addition, the Company had stock options outstanding that were anti-dilutive totaling 7 million shares for each of the three and six months ended June 30, 2013, and 5 million shares for each of the three and six months ended June 30, 2012, respectively.

Cash Dividends	6 Months Ended
Cash Dividends	Jun. 30, 2013
Text Block [Abstract]
Cash Dividends	12. Cash Dividends On May 15, 2013, the Company’s Board of Directors approved a cash dividend of $0.26 per share. The cash dividend was paid on June 28, 2013, to each stockholder of record on June 14, 2013. Cash dividends aggregated $111 million and $167 million for the three and six months ended June 30, 2013 and $51 million and $102 million for the three and six months ended June 30, 2012, 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.

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2013
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	13. Commitments and Contingencies We have received federal grand jury subpoenas and subsequent inquiries from governmental agencies requesting records related to our compliance with export trade laws and regulations. We have cooperated fully with agents from the Department of Justice, the Bureau of Industry and Security, the Office of Foreign Assets Control, and U.S. Immigration and Customs Enforcement in responding to the inquiries. We have also cooperated with an informal inquiry from the Securities and Exchange Commission in connection with the inquiries previously made by the aforementioned federal agencies. We have conducted our own internal review of this matter. At the conclusion of our internal review in the fourth quarter of 2009, we identified possible areas of concern and discussed these areas of concern with the relevant agencies. We are currently negotiating a potential resolution with the agencies involved related to these matters. We currently anticipate that any administrative fine or penalty agreed to as part of a resolution would be within established accruals, and would not have a material effect on our financial position or results of operations. To the extent a resolution is not negotiated, we cannot predict the timing or effect that any resulting government actions may have on our financial position or results of operations. In 2011, the Company acquired Ameron International Corporation (“Ameron”). On or about November 21, 2008, the United States Department of Treasury, Office of Foreign Assets Control (“OFAC”) sent a Requirement to Furnish Information to Ameron. Ameron retained counsel and conducted an internal investigation. In 2009, Ameron, through its counsel, responded to OFAC. On or about January 21, 2011, OFAC issued an administrative subpoena to Ameron. OFAC and Ameron have entered into Tolling Agreements. All of the conduct under review occurred before acquisition of Ameron by the Company. We currently anticipate that any administrative fine or penalty agreed to as part of a resolution would be within established accruals, and would not have a material effect on our financial position or results of operations. To the extent a resolution is not negotiated, we cannot predict the timing or effect that any resulting government actions may have on our financial position or results of operations. On February 20, 2013, the Company acquired Robbins & Myers, Inc. (“R&M”). R&M was subject to an ongoing investigation by the U.S. Department of Justice (“DOJ”) and the Department of Commerce Bureau of Industry and Security (“BIS”) regarding potential export controls violations arising from certain shipments by R&M’s Belgian subsidiary to one customer in Iran, Sudan and Syria in 2005 and 2006. R&M has cooperated with the investigation and is currently negotiating a joint settlement with the DOJ and BIS. We currently anticipate that any administrative fine or criminal penalty agreed to as part of a resolution would be within established accruals, and would not have a material effect on our financial position or results of operations. To the extent a resolution is not negotiated, we cannot predict the timing or effect that any resulting government actions may have on our financial position or results of operations. In addition, we are involved in various other claims, regulatory agency audits and pending or threatened legal actions involving a variety of matters. As of June 30, 2013, the Company recorded an immaterial amount for contingent liabilities representing all contingencies believed to be probable. The Company has also 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 total potential loss on these matters cannot be determined; however, in our opinion, any ultimate liability, to the extent not otherwise provided for and except for the specific cases referred to above, will not materially affect our financial position, cash flow or results of operations. As it relates to the specific cases referred to above we currently anticipate that any administrative fine or penalty agreed to as part of a resolution would be within established accruals, and would not have a material effect on our financial position or results of operations. To the extent a resolution is not negotiated as anticipated, we cannot predict the timing or effect that any resulting government actions may have on 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 intention and experience. Our business is affected both directly and indirectly by governmental laws and regulations relating to the oilfield service industry in general, as well as by environmental and safety regulations that specifically apply to our business. Although we have not incurred material costs in connection with our compliance with such laws, there can be no assurance that other developments, such as new environmental laws, regulations and enforcement policies hereunder may not result in additional, presently unquantifiable, costs or liabilities to us.

Acquisition

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Acquisition

14. Acquisition

On February 20, 2013, the Company completed its previously announced acquisition of all of the shares of Robbins & Myers, Inc., a U.S.-based designer and manufacturer of products and systems for the oil and gas industry. Under the merger agreement for this transaction, R&M shareholders received $60.00 in cash for each common share for an aggregate purchase price of $2,375 million, net of cash acquired.

The Company has included the financial results of R&M in its consolidated financial statements as of the date of acquisition with components of the R&M operations included in the Company’s Rig Technology, Petroleum Services & Supplies and Distribution & Transmission segments. The Company believes the acquisition of R&M will advance its strategic goal of providing a broader selection of products and services to its customers.

The following table displays the total preliminary purchase price allocation for the R&M acquisition. The R&M purchase price allocation remains preliminary until the valuation is complete. The table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition. (in millions):


Current assets, net of cash acquired	$	446
Property, plant and equipment		198
Intangible assets		969
Goodwill		1,538
Other assets		25

Total assets acquired		3,176

Current liabilities		190
Deferred taxes		491
Other liabilities		120

Total liabilities		801

Cash consideration, net of cash acquired	$	2,375

The Company has preliminarily allocated $969 million to intangible assets (19 year weighted-average life). The intangible assets are expected to be amortizable and are comprised of: $817 million of customer relationships (20 year weighted-average life), $58 million of trademarks (15 year weighted-average life), and $94 million of other intangible assets (15 year weighted-average life). The amount allocated to goodwill represents the excess of the purchase price over the fair value of the net assets acquired. Goodwill resulting from the R&M acquisition is not expected to be deductible for tax purposes. Pro forma information is not included because the acquired operations would not have materially impacted the Company’s consolidated operating results.

Recently Issued Accounting Standards	6 Months Ended
Recently Issued Accounting Standards	Jun. 30, 2013
Text Block [Abstract]
Recently Issued Accounting Standards	15. Recently Issued Accounting Standards In February 2013, the Financial Accounting Standards Board issued Accounting Standard Update No. 2013-02 “Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income” (ASU No. 2013-02), which is an update for Accounting Standards Codification Topic No. 220 “Comprehensive Income”. The update improves the reporting of reclassifications out of accumulated other comprehensive income. The guidance was effective for the Company’s interim and annual reporting periods beginning January 1, 2013, and applied prospectively. There was no significant impact to the Company’s Consolidated Financial Statements from the adopted provisions of ASU No. 2013-02. In March 2013, the FASB issued Accounting Standards Update No. 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (a consensus of the FASB Emerging Issues Task Force).” (ASU No. 2013-05), which amends Accounting Standards Codification Topic No. 830, “Foreign Currency Matters,” and Accounting Standards Codification Topic No. 810, “Consolidation,” to address diversity in practice related to the release of cumulative translation adjustments (“CTA”) into earnings upon the occurrence of certain derecognition events. ASU No. 2013-05 precludes the release of CTA for derecognition events that occur within a foreign entity, unless such events represent a complete or substantially complete liquidation of the foreign entity; however, derecognition events related to investments in a foreign entity result in the release of all CTA related to the derecognized foreign entity, even when a noncontrolling financial interest is retained. ASU No. 2013-05 also amends Accounting Standards Codification Topic No. 805, “Business Combinations,” for transactions that result in a company obtaining control of a business in a step acquisition by increasing an investment in a foreign entity from one accounted for under the equity method to one accounted for as a consolidated investment. ASU No. 2013-05 is effective for fiscal years beginning after December 15, 2013, and applied prospectively. Early adoption is permitted as of the beginning of the entity’s fiscal year. The Company is currently assessing the impact ASU No. 2013-05 will have on its financial statements, but does not expect a significant impact from adoption of the pronouncement.

Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2013

Payables And Accruals [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The carrying amounts of 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. See Note 7 for the fair value of long-term debt and Note 10 for the fair value of derivative financial instruments.

Service and Product Warranties

Service and Product Warranties

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


Balance at December 31, 2012	$	194

Net provisions for warranties issued during the year		45
Amounts incurred		(38	)
Currency translation adjustments and other		4

Balance at June 30, 2013	$	205

Derivatives and Hedging

Cash Flow Hedging Strategy

Net Income 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):


	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Company	$	531	$	605	$	1,033	$	1,211

Denominator:
Basic—weighted average common shares outstanding		426		425		426		424
Dilutive effect of employee stock options and other unvested stock awards		2		2		2		2

Diluted outstanding shares		428		427		428		426

Net income attributable to Company per share:
Basic	$	1.25	$	1.42	$	2.42	$	2.85

Diluted	$	1.24	$	1.42	$	2.41	$	2.84

Cash dividends per share	$	0.26	$	0.12	$	0.39	$	0.24

Recently Issued Accounting Standards

In February 2013, the Financial Accounting Standards Board issued Accounting Standard Update No. 2013-02 “Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income” (ASU No. 2013-02), which is an update for Accounting Standards Codification Topic No. 220 “Comprehensive Income”. The update improves the reporting of reclassifications out of accumulated other comprehensive income. The guidance was effective for the Company’s interim and annual reporting periods beginning January 1, 2013, and applied prospectively. There was no significant impact to the Company’s Consolidated Financial Statements from the adopted provisions of ASU No. 2013-02.

In March 2013, the FASB issued Accounting Standards Update No. 2013-05, “Parent’s Accounting for the Cumulative Translation Adjustment upon Derecognition of Certain Subsidiaries or Groups of Assets within a Foreign Entity or of an Investment in a Foreign Entity (a consensus of the FASB Emerging Issues Task Force).” (ASU No. 2013-05), which amends Accounting Standards Codification Topic No. 830, “Foreign Currency Matters,” and Accounting Standards Codification Topic No. 810, “Consolidation,” to address diversity in practice related to the release of cumulative translation adjustments (“CTA”) into earnings upon the occurrence of certain derecognition events. ASU No. 2013-05 precludes the release of CTA for derecognition events that occur within a foreign entity, unless such events represent a complete or substantially complete liquidation of the foreign entity; however, derecognition events related to investments in a foreign entity result in the release of all CTA related to the derecognized foreign entity, even when a noncontrolling financial interest is retained. ASU No. 2013-05 also amends Accounting Standards Codification Topic No. 805, “Business Combinations,” for transactions that result in a company obtaining control of a business in a step acquisition by increasing an investment in a foreign entity from one accounted for under the equity method to one accounted for as a consolidated investment. ASU No. 2013-05 is effective for fiscal years beginning after December 15, 2013, and applied prospectively. Early adoption is permitted as of the beginning of the entity’s fiscal year. The Company is currently assessing the impact ASU No. 2013-05 will have on its financial statements, but does not expect a significant impact from adoption of the pronouncement.

Inventories, net (Tables)

6 Months Ended

Jun. 30, 2013

Inventory Disclosure [Abstract]

Inventories

Inventories consist of (in millions):


	June 30,		December 31,
	2013		2012
Raw materials and supplies	$	1,225	$	1,268
Work in process		1,015		905
Finished goods and purchased products		3,843		3,718

Total	$	6,083	$	5,891

Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Payables And Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consist of (in millions):


	June 30,		December 31,
	2013		2012
Customer prepayments and billings	$	674	$	699
Accrued vendor costs		633		444
Compensation		389		511
Warranty		205		194
Taxes (non income)		125		150
Insurance		119		108
Fair value of derivatives		59		18
Interest		12		14
Other		465		433

Total	$	2,681	$	2,571

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, 2012	$	194

Net provisions for warranties issued during the year		45
Amounts incurred		(38	)
Currency translation adjustments and other		4

Balance at June 30, 2013	$	205

Costs and Estimated Earnings on Uncompleted Contracts (Tables)

6 Months Ended

Jun. 30, 2013

Text Block [Abstract]

Costs and Estimated Earnings on Uncompleted Contracts

Costs and estimated earnings on uncompleted contracts consist of (in millions):


	June 30,			December 31,
	2013			2012
Costs incurred on uncompleted contracts	$	6,942		$	5,731
Estimated earnings		3,527			3,160

		10,469			8,891
Less: Billings to date		10,180			8,855

	$	289		$	36

Costs and estimated earnings in excess of billings on uncompleted contracts	$	1,448		$	1,225
Billings in excess of costs and estimated earnings on uncompleted contracts		(1,159	)		(1,189	)

	$	289		$	36

Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2013

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, 2012	$	132		$	42		$	(67	)	$	107
Accumulated other comprehensive income (loss) before reclassifications		(213	)		(68	)		—			(281	)
Amounts reclassified from accumulated other comprehensive income (loss)		(25	)		(2	)		—			(27	)

Balance at June 30, 2013	$	(106	)	$	(28	)	$	(67	)	$	(201	)

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):


	Three Months Ended June 30,
	2013											2012
	Currency			Derivative			Defined					Currency		Derivative			Defined
	Translation			Financial			Benefit					Translation		Financial			Benefit
	Adjustments			Instruments			Plans		Total			Adjustments		Instruments			Plans		Total
Revenue	$	—		$	(2	)	$	—	$	(2	)	$	—	$	2		$	—	$	2
Cost of revenue		—			4			—		4			—		5			—		5
Other income (expense), net		(25	)		—			—		(25	)		—		—			—		—
Tax effect		—			—			—		—			—		(2	)		—		(2	)

	$	(25	)	$	2		$	—	$	(23	)	$	—	$	5		$	—	$	5


	Six Months Ended June 30,
	2013											2012
	Currency			Derivative			Defined					Currency		Derivative			Defined
	Translation			Financial			Benefit					Translation		Financial			Benefit
	Adjustments			Instruments			Plans		Total			Adjustments		Instruments			Plans		Total
Revenue	$	—		$	(4	)	$	—	$	(4	)	$	—	$	6		$	—	$	6
Cost of revenue		—			1			—		1			—		11			—		11
Other income (expense), net		(25	)		—			—		(25	)		—		—			—		—
Tax effect		—			1			—		1			—		(5	)		—		(5	)

	$	(25	)	$	(2	)	$	—	$	(27	)	$	—	$	12		$	—	$	12

Business Segments (Tables)

6 Months Ended

Jun. 30, 2013

Segment Reporting [Abstract]

Operating Results by Segment

Operating results by segment are as follows (in millions):


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Revenue:
Rig Technology	$	2,833		$	2,405		$	5,461		$	4,664
Petroleum Services & Supplies		1,749			1,776			3,450			3,480
Distribution & Transmission		1,295			780			2,522			1,344
Eliminations		(276	)		(227	)		(525	)		(451	)

Total Revenue	$	5,601		$	4,734		$	10,908		$	9,037

Operating Profit:
Rig Technology	$	574		$	554		$	1,124		$	1,101
Petroleum Services & Supplies		273			390			528			778
Distribution & Transmission		58			46			121			89
Unallocated expenses and eliminations		(136	)		(111	)		(253	)		(212	)

Total Operating Profit	$	769		$	879		$	1,520		$	1,756

Operating Profit %:
Rig Technology		20.3	%		23.0	%		20.6	%		23.6	%
Petroleum Services & Supplies		15.6	%		22.0	%		15.3	%		22.4	%
Distribution & Transmission		4.5	%		5.9	%		4.8	%		6.6	%
Total Operating Profit %		13.7	%		18.6	%		13.9	%		19.4	%

Other Costs by Segment

Other costs by segment are as follows (in millions):


	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Other costs:
Rig Technology	$	13	$	17	$	20	$	21
Petroleum Services & Supplies		31		3		87		3
Distribution & Transmission		13		8		15		8

Total other costs	$	57	$	28	$	122	$	32

Debt (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Debt

Debt consists of (in millions):


	June 30, 2013		December 31, 2012
Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015	$	151	$	151
Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017		500		500
Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022		1,395		1,395
Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042		1,096		1,096
Revolving Credit Facility, expires September 28, 2017		970		—
Other		8		7

Total debt		4,120		3,149
Less current portion		—		1

Long-term debt	$	4,120	$	3,148

Tax (Tables)

6 Months Ended

Jun. 30, 2013

Income Tax Disclosure [Abstract]

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 of 35% was as follows (in millions):


	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Federal income tax at U.S. federal statutory rate	$	270		$	310		$	523		$	616
Foreign income tax rate differential		(65	)		(57	)		(122	)		(80	)
State income tax, net of federal benefit		4			9			12			17
Nondeductible expenses		8			10			16			23
Tax benefit of manufacturing deduction		(8	)		(9	)		(16	)		(18	)
Foreign dividends, net of foreign tax credits		8			14			12			20
Tax impact of foreign exchange		21			12			39			(18	)
Other		1			(4	)		(1	)		(6	)

Provision for income taxes	$	239		$	285		$	463		$	554

Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Outstanding Foreign Currency Forward Contracts

The Company had the following outstanding foreign currency forward contracts that were entered into to hedge nonfunctional currency cash flows from forecasted revenues and expenses (in millions):


	Currency Denomination
Foreign Currency	June 30, 2013			December 31, 2012
Norwegian Krone		NOK	9,440	NOK	6,281
U.S. Dollar		$	509	$	331
Euro		€	376	€	389
Danish Krone		DKK	195	DKK	134
British Pound Sterling		£	34	£	6
Singapore Dollar		SGD	16	SGD	14

The Company had the following outstanding foreign currency forward contracts that hedge the fair value of nonfunctional currency monetary accounts (in millions):


	Currency Denomination
Foreign Currency	June 30, 2013		December 31, 2012
Norwegian Krone	NOK	2,979	NOK	1,684
Russian Ruble	RUB	1,841	RUB	1,467
U.S. Dollar	$	941	$	967
Euro	€	191	€	225
Danish Krone	DKK	183	DKK	177
Brazilian Real	BRL	172	BRL	135
Singapore Dollar	SGD	16	SGD	24
British Pound Sterling	£	11	£	9
Swedish Krone	SEK	1	SEK	5

Derivative Instruments and their Balance Sheet Classifications

The Company has the following gross fair values of its derivative instruments and their balance sheet classifications:

NATIONAL OILWELL VARCO, INC.

Fair Values of Derivative Instruments

(In millions)


	Asset Derivatives					Liability Derivatives
		Fair Value					Fair Value
	Balance Sheet Location	June 30, 2013		December 31, 2012		Balance Sheet Location	June 30, 2013		December 31, 2012
Derivatives designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	12	$	57	Accrued liabilities	$	32	$	5
Foreign exchange contracts	Other Assets		2		24	Other Liabilities		15		1

Total derivatives designated as hedging instruments under ASC Topic 815		$	14	$	81		$	47	$	6

Derivatives not designated as hedging instruments under ASC Topic 815
Foreign exchange contracts	Prepaid and other current assets	$	20	$	24	Accrued liabilities	$	27	$	13

Total derivatives not designated as hedging instruments under ASC Topic 815		$	20	$	24		$	27	$	13

Total derivatives		$	34	$	105		$	74	$	19

Effect of Derivative Instruments on Consolidated Statements of Income

The Effect of Derivative Instruments on the Consolidated Statements of Income

($ in millions)


Derivatives in ASC Topic 815 Cash Flow Hedging Relationships	Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) (a)						Location of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)						Location of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing) (b)
	Six Months Ended June 30,							Six Months Ended June 30,							Six Months Ended June 30,
	2013			2012				2013			2012				2013		2012
							Revenue		4			(6	)
Foreign exchange contracts		(95	)		(5	)	Cost of revenue		(1	)		(11	)	Other income (expense), net		5		4

Total		(95	)		(5	)			3			(17	)			5		4


Derivatives Not Designated as Hedging Instruments under ASC Topic 815	Location of Gain (Loss) Recognized in Income on Derivative	Amount of Gain (Loss) Recognized in Income on Derivative
		Six Months Ended June 30,
		2013		2012
Foreign exchange contracts	Other income (expense), net		12		13

Total			12		13

(a)	The Company expects that $24 million of the Accumulated Other Comprehensive Income (Loss) will be reclassified into earnings within the next twelve months with an offset by gains from the underlying transactions resulting in no impact to earnings or cash flow.

(b)

Net Income Attributable to Company Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

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):


	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Numerator:
Net income attributable to Company	$	531	$	605	$	1,033	$	1,211

Denominator:
Basic—weighted average common shares outstanding		426		425		426		424
Dilutive effect of employee stock options and other unvested stock awards		2		2		2		2

Diluted outstanding shares		428		427		428		426

Net income attributable to Company per share:
Basic	$	1.25	$	1.42	$	2.42	$	2.85

Diluted	$	1.24	$	1.42	$	2.41	$	2.84

Cash dividends per share	$	0.26	$	0.12	$	0.39	$	0.24

Acquisition (Tables)

6 Months Ended

Jun. 30, 2013

Business Combinations [Abstract]

Estimated Fair Values of Assets Acquired and Liabilities

The table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition. (in millions):


Current assets, net of cash acquired	$	446
Property, plant and equipment		198
Intangible assets		969
Goodwill		1,538
Other assets		25

Total assets acquired		3,176

Current liabilities		190
Deferred taxes		491
Other liabilities		120

Total liabilities		801

Cash consideration, net of cash acquired	$	2,375

Inventories, net - Inventories (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 1,225	$ 1,268
Work in process	1,015	905
Finished goods and purchased products	3,843	3,718
Total	$ 6,083	$ 5,891

Accrued Liabilities - Accrued Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Payables And Accruals [Abstract]
Customer prepayments and billings	$ 674	$ 699
Accrued vendor costs	633	444
Compensation	389	511
Warranty	205	194
Taxes (non income)	125	150
Insurance	119	108
Fair value of derivatives	59	18
Interest	12	14
Other	465	433
Total	$ 2,681	$ 2,571

Accrued Liabilities - Changes in Carrying Amount of Service and Product Warranties (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Product Warranties Disclosures [Abstract]
Beginning Balance	$ 194
Net provisions for warranties issued during the year	45
Amounts incurred	(38)
Currency translation adjustments and other	4
Ending Balance	$ 205

Costs and Estimated Earnings on Uncompleted Contracts - Costs and Estimated Earnings on Uncompleted Contracts (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Contractors [Abstract]
Costs incurred on uncompleted contracts	$ 6,942	$ 5,731
Estimated earnings	3,527	3,160
Costs and estimated earnings on uncompleted contracts, Gross	10,469	8,891
Less: Billings to date	10,180	8,855
Total net estimate billing on uncompleted contracts	289	36
Costs and estimated earnings in excess of billings on uncompleted contracts	1,448	1,225
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,159)	(1,189)
Total net estimate billing on uncompleted contracts	$ 289	$ 36

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Currency Translation Adjustments[Member]	Jun. 30, 2013 Derivative Financial Instruments, Net of Tax [Member]	Jun. 30, 2013 Defined Benefit Plans, Net of Tax [Member]	Dec. 31, 2012 Defined Benefit Plans, Net of Tax [Member]
Accumulated other comprehensive income (loss), Beginning balance	$ 107	$ 132	$ 42	$ (67)	$ (67)
Accumulated other comprehensive income (loss) before reclassifications	(281)	(213)	(68)
Amounts reclassified from accumulated other comprehensive income (loss)	(27)	(25)	(2)
Accumulated other comprehensive income (loss), Ending balance	$ (201)	$ (106)	$ (28)	$ (67)	$ (67)

Accumulated Other Comprehensive Income (Loss) - Components Of Amounts Reclassified From Accumulated Other Comprehensive Income Loss (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency Translation Adjustments	$ (25)		$ (25)
Derivative Financial Instruments	2	5	(2)	12
Defined Benefit Plans
Total	(23)	5	(27)	12
Revenue [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency Translation Adjustments
Derivative Financial Instruments	(2)	2	(4)	6
Defined Benefit Plans
Total	(2)	2	(4)	6
Cost of Revenue [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency Translation Adjustments
Derivative Financial Instruments	4	5	1	11
Defined Benefit Plans
Total	4	5	1	11
Other income (expense), net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency Translation Adjustments	(25)		(25)
Derivative Financial Instruments
Defined Benefit Plans
Total	(25)		(25)
Tax Effects [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Currency Translation Adjustments
Derivative Financial Instruments		(2)	1	(5)
Defined Benefit Plans
Total		$ (2)	$ 1	$ (5)

Accumulated Other Comprehensive Income (Loss) - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net increase to other comprehensive income or loss upon the translation	$ (121)	$ (121)	$ (238)	$ (56)
Currency translation gains reclassified from accumulated other comprehensive income (loss)	25
Changes in derivative financial instruments, net of tax	(22)	(53)	(70)	10
Changes in derivative financial instruments, tax	$ 8	$ (22)	$ 27	$ 4

Business Segments - Operating Results by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenue	$ 5,601	$ 4,734	$ 10,908	$ 9,037
Total Operating Profit	769	879	1,520	1,756
Percentage as of operating profit to revenue	13.70%	18.60%	13.90%	19.40%
Operating Segments [Member] \| Rig Technology [Member]
Segment Reporting Information [Line Items]
Revenue	2,833	2,405	5,461	4,664
Total Operating Profit	574	554	1,124	1,101
Percentage as of operating profit to revenue	20.30%	23.00%	20.60%	23.60%
Operating Segments [Member] \| Petroleum Services & Supplies [Member]
Segment Reporting Information [Line Items]
Revenue	1,749	1,776	3,450	3,480
Total Operating Profit	273	390	528	778
Percentage as of operating profit to revenue	15.60%	22.00%	15.30%	22.40%
Operating Segments [Member] \| Distribution & Transmission [Member]
Segment Reporting Information [Line Items]
Revenue	1,295	780	2,522	1,344
Total Operating Profit	58	46	121	89
Percentage as of operating profit to revenue	4.50%	5.90%	4.80%	6.60%
Unallocated/Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(276)	(227)	(525)	(451)
Total Operating Profit	$ (136)	$ (111)	$ (253)	$ (212)

Business Segments - Other Cost by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Total other costs	$ 57	$ 28	$ 122	$ 32
Operating Segments [Member] \| Rig Technology [Member]
Segment Reporting Information [Line Items]
Total other costs	13	17	20	21
Operating Segments [Member] \| Petroleum Services & Supplies [Member]
Segment Reporting Information [Line Items]
Total other costs	31	3	87	3
Operating Segments [Member] \| Distribution & Transmission [Member]
Segment Reporting Information [Line Items]
Total other costs	$ 13	$ 8	$ 15	$ 8

Debt - Debt (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Revolving Credit Facility, expires September 28, 2017	$ 970
Other	8	7
Total debt	4,120	3,149
Less current portion		1
Long-term debt	4,120	3,148
Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015 [Member]
Debt Instrument [Line Items]
Senior Notes	151	151
Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017 [Member]
Debt Instrument [Line Items]
Senior Notes	500	500
Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022 [Member]
Debt Instrument [Line Items]
Senior Notes	1,395	1,395
Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 1,096	$ 1,096

Debt - Debt (Parenthetical) (Detail)	Jun. 30, 2013
Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015 [Member]
Debt Instrument [Line Items]
Senior notes interest rate	6.125%
Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017 [Member]
Debt Instrument [Line Items]
Senior notes interest rate	1.35%
Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022 [Member]
Debt Instrument [Line Items]
Senior notes interest rate	2.60%
Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042 [Member]
Debt Instrument [Line Items]
Senior notes interest rate	3.95%

Debt - Additional Information (Detail) (USD $)	6 Months Ended
Debt - Additional Information (Detail) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Borrowings against credit facility	$ 858,000,000
Funds available under revolving credit facility	1,672,000,000
Variable rate	0.875%
Interest rate under multi currency facility	LIBOR, NIBOR or EURIBOR plus 0.875%
Variable rate basis	LIBOR, NIBOR or EURIBOR plus
Outstanding letters of credit under various bilateral committed letter of credit facilities	2,641,000,000
Fair Value of Unsecured Senior Note	2,938,000,000	3,190,000,000
Carrying Value of Unsecured Senior Notes	4,120,000,000	3,149,000,000
Five-year unsecured revolving credit facility [Member]
Debt Instrument [Line Items]
Unsecured revolving credit facility	3,500,000,000
Borrowings against credit facility	970,000,000
Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Carrying Value of Unsecured Senior Notes	$ 3,142,000,000	$ 3,142,000,000

Tax - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Reconciliation Of Statutory Federal Tax Rate [Line Items]
Effective tax rate	31.00%	32.10%	31.00%	31.50%
U.S. federal statutory rate			35.00%
Unrecognized tax benefit	$ 128		$ 128
Realized [Member]
Reconciliation Of Statutory Federal Tax Rate [Line Items]
Unrecognized tax benefit	$ 55		$ 55

Tax - Difference Between Effective Tax Rate (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Tax Disclosure [Abstract]
Federal income tax at U.S. federal statutory rate	$ 270	$ 310	$ 523	$ 616
Foreign income tax rate differential	(65)	(57)	(122)	(80)
State income tax, net of federal benefit	4	9	12	17
Nondeductible expenses	8	10	16	23
Tax benefit of manufacturing deduction	(8)	(9)	(16)	(18)
Foreign dividends, net of foreign tax credits	8	14	12	20
Tax impact of foreign exchange	21	12	39	(18)
Other	1	(4)	(1)	(6)
Provision for income taxes	$ 239	$ 285	$ 463	$ 554

Stock-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earlier authorized shares under stock based compensation			39,500,000
Remaining shares available for future grants under the Plan	14,182,083		14,182,083
Total stock-based compensation compensation arrangements under the Plan	$ 25	$ 22	$ 42	$ 34
Total income tax benefit stock-based compensation arrangements under the Plan	8	8	13	11
Period of option vested over grant date			restricted stock awards vest in equal thirds over three years on the anniversary of the grant date
Description of performance goal			Performance against the ROC goal is determined by comparing the performance of the Company's actual ROC performance average for each of the three years of the performance period against the ROC goal set by the Company's Compensation Committee.
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option granted			2,819,806
Stock option granted fair value			$ 24.10
Restricted stock and restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			540,194
Restricted stock granted fair value			$ 69.33
Performance-base restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation compensation arrangements under the Plan			$ 8
Performance-base restricted stock [Member] \| Minimum [Member] \| Senior Management Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			0
Performance-base restricted stock [Member] \| Maximum [Member] \| Senior Management Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			398,160
Restricted stock awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted			16,702
Restricted stock granted fair value			$ 69.17
Period of option vested over grant date			restricted stock and restricted stock units were granted February 15, 2013 and vest on the third anniversary of the date of grant, except for a special grant of 16,352 restricted stock units which vest on the second anniversary of the date of grant (subject to the satisfaction of a performance condition). On May 22, 2013, 16,702 the restricted stock awards, with a fair value of $69.17, were granted to the non-employee members of the board of directors. These options generally vest over a three-year period from the grant date.
Performance based restricted stock awards vested, number of years			3 years
Restricted stock awards [Member] \| Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option granted, exercise price			$ 69.33
Restricted stock awards [Member] \| TSR Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based restricted stock awards granted in percent			50.00%
Restricted stock awards [Member] \| ROC Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based restricted stock awards granted in percent			50.00%

Derivative Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 2 [Member]
Derivatives, Fair Value [Line Items]
Maximum Derivative Financial Instrument's Term (Months)			2 months	24 months
Derivative Assets	$ 34	$ 105			$ 34
Derivative Liabilities	74	19			74
Fair value of the Company's foreign currency forward contracts	$ 40

Derivative Financial Instruments - Outstanding Foreign Currency Forward Contracts (Detail) (Forward Contracts [Member]) In Millions, unless otherwise specified	Jun. 30, 2013 USD ($)	Jun. 30, 2013 BRL	Jun. 30, 2013 DKK	Jun. 30, 2013 EUR (€)	Jun. 30, 2013 GBP (£)	Jun. 30, 2013 NOK	Jun. 30, 2013 RUB	Jun. 30, 2013 SEK	Jun. 30, 2013 SGD	Dec. 31, 2012 USD ($)	Dec. 31, 2012 BRL	Dec. 31, 2012 DKK	Dec. 31, 2012 EUR (€)	Dec. 31, 2012 GBP (£)	Dec. 31, 2012 NOK	Dec. 31, 2012 RUB	Dec. 31, 2012 SEK	Dec. 31, 2012 SGD
Derivative [Line Items]
Foreign currency, Cash flow hedging	$ 509		195	€ 376	£ 34	9,440			16	$ 389		134	€ 331	£ 6	6,281			14
Foreign currency, Non-designated hedging	$ 941	172	183	€ 191	£ 11	2,979	1,841	1	16	$ 967	135	177	€ 225	£ 9	1,684	1,467	5	24

Derivative Financial Instruments - Derivative Instruments and their Balance Sheet Classifications (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 74	$ 19
Derivative Assets	34	105
Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	47	6
Derivative Assets	14	81
Not Designated As Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	27	13
Derivative Assets	20	24
Foreign exchange contracts [Member] \| Prepaid and other current assets [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	12	57
Foreign exchange contracts [Member] \| Prepaid and other current assets [Member] \| Not Designated As Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	20	24
Foreign exchange contracts [Member] \| Other Assets [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	2	24
Foreign exchange contracts [Member] \| Accrued liabilities [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	32	5
Foreign exchange contracts [Member] \| Accrued liabilities [Member] \| Not Designated As Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	27	13
Foreign exchange contracts [Member] \| Other Liabilities [Member] \| Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 15	$ 1

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Income (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Not Designated As Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	12	13
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(95)	(5)
Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	3	(17)
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	5	4
Foreign exchange contracts [Member] \| Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	(95)	(5)
Foreign exchange contracts [Member] \| Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	5	4
Foreign exchange contracts [Member] \| Other income (expense), net [Member] \| Not Designated As Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion)	12	13
Foreign exchange contracts [Member] \| Revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	4	(6)
Foreign exchange contracts [Member] \| Cost of revenue [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (1)	$ (11)

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Income (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated other comprehensive income (loss), reclassified	$ (2)	$ (5)	$ 2	$ (12)
Amount of gain (loss) recognized in income on derivative (ineffective portion)				(1)
Amount of gain (loss) recognized in income on derivative (amount excluded from hedge effectiveness)
Scenario, Forecast [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Accumulated other comprehensive income (loss), reclassified			$ 24

Net Income Attributable to Company Per Share - Computation of Weighted Average Basic and Diluted Shares Outstanding (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Numerator:
Net income attributable to Company	$ 531	$ 605	$ 1,033	$ 1,211
Denominator:
Basic-weighted average common shares outstanding	426	425	426	424
Dilutive effect of employee stock options and other unvested stock awards	2	2	2	2
Diluted outstanding shares	428	427	428	426
Net income attributable to Company per share:
Basic	$ 1.25	$ 1.42	$ 2.42	$ 2.85
Diluted	$ 1.24	$ 1.42	$ 2.41	$ 2.84
Cash dividends per share	$ 0.26	$ 0.12	$ 0.39	$ 0.24

Cash Dividends - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	May 15, 2013
Statement Of Partners Capital [Abstract]
Dividends Payable, Amount Per Share					$ 0.26
Aggregated Cash Dividends Paid	$ 111	$ 51	$ 167	$ 102

Acquisitions - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Aggregate purchase price of acquisitions	$ 2,390	$ 2,014
All Other Acquisitions [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Share holder received in cash per share	$ 60.00
Aggregate purchase price of acquisitions	2,375
Intangible assets	969
Weighted average life	19 years
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	817
Weighted average life	20 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	58
Weighted average life	15 years
Other intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 94
Weighted average life	15 years

Acquisitions - Estimated Fair Values of Assets Acquired and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill	$ 8,997	$ 7,172
All Other Acquisitions [Member]
Business Acquisition [Line Items]
Current assets, net of cash acquired	446
Property, plant and equipment	198
Intangible assets	969
Goodwill	1,538
Other assets	25
Total assets acquired	3,176
Current liabilities	190
Deferred taxes	491
Other liabilities	120
Total liabilities	801
Cash consideration, net of cash acquired	$ 2,375

Business Segments - Additional Information (Detail)	3 Months Ended	6 Months Ended
Business Segments - Additional Information (Detail)	Jun. 30, 2013	Jun. 30, 2013
Segment Reporting [Abstract]
Revenue from shipyard customer	10.00%	10.00%