Fair Value of Derivative Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 242	$ 978
Liability Derivatives	248	349
Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	57	94
Liability Derivatives	98	92
Derivatives Designated as Hedging Instruments \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	23	69
Liability Derivatives	4	17
Derivatives Designated as Hedging Instruments \| Commodity contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	12	12
Liability Derivatives	25	33
Derivatives Designated as Hedging Instruments \| Interest rate contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	22	13
Liability Derivatives	69	42
Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Asset Derivatives	185	884
Liability Derivatives	150	257
Derivatives Not Designated as Hedging Instruments \| Currency exchange contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	61	735
Liability Derivatives	23	24
Derivatives Not Designated as Hedging Instruments \| Commodity contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	80	90
Liability Derivatives	98	194
Derivatives Not Designated as Hedging Instruments \| Interest rate contracts
Derivatives, Fair Value [Line Items]
Asset Derivatives	44	59
Liability Derivatives	$ 29	$ 39

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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