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Accrued Liabilities - Accrued Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued vendor costs	$ 886nov_AccruedPurchaseOrders	$ 815nov_AccruedPurchaseOrders
Customer prepayments and billings	614us-gaap_CustomerAdvancesCurrent	703us-gaap_CustomerAdvancesCurrent
Fair value of derivative financial instruments	420us-gaap_DerivativeInstrumentsAndHedgesLiabilities	297us-gaap_DerivativeInstrumentsAndHedgesLiabilities
Compensation	353us-gaap_EmployeeRelatedLiabilitiesCurrent	662us-gaap_EmployeeRelatedLiabilitiesCurrent
Warranty	284us-gaap_StandardProductWarrantyAccrualCurrent	272us-gaap_StandardProductWarrantyAccrualCurrent
Taxes (non-income)	159us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent	211us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent
Insurance	132us-gaap_AccruedInsuranceCurrent	126us-gaap_AccruedInsuranceCurrent
Accrued commissions	102nov_AccruedCommissionsExpense	97nov_AccruedCommissionsExpense
Interest	30us-gaap_InterestPayableCurrent	11us-gaap_InterestPayableCurrent
Other	320us-gaap_OtherAccruedLiabilitiesCurrent	324us-gaap_OtherAccruedLiabilitiesCurrent
Total	$ 3,300us-gaap_AccruedLiabilitiesCurrent	$ 3,518us-gaap_AccruedLiabilitiesCurrent

X

- Definition

Accrued Commissions Expense

+ References

No definition available.

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X

- Definition

Accrued purchase orders.

+ References

No definition available.

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X

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

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-Name Accounting Standards Codification

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-Paragraph 1

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Liabilities

-URI http://asc.fasb.org/extlink&oid=6509677



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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

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-Topic 210

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-Paragraph 1

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- Definition

The current portion of prepayments received from customers for goods or services to be provided in the future.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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- Definition

Sum as of the balance sheet date of the (a) fair values of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and (b) the carrying amounts of the liabilities arising from financial instruments or contracts used to mitigate a specified risk (hedge), and which are expected to be extinguished or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

+ References

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X

- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

+ References

No definition available.

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