Balance Sheet Effect of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Automotive [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	$ 34,871	$ 32,631
Fair Value of Assets	950	928
Fair Value of Liabilities	583	630
Counterparty netting - Derivative Asset, Fair Value, Amount Not Offset Against Collateral	(552)	(567)
Counterparty netting - Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(552)	(567)
Derivative Asset	398	361
Derivative Liability	31	63
Automotive [Member] \| Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member] \| Cash Flow Hedging [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	16,076	12,593
Fair Value of Assets	666	522
Fair Value of Liabilities	235	366
Automotive [Member] \| Not Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	18,152	19,395
Fair Value of Assets	280	404
Fair Value of Liabilities	331	238
Automotive [Member] \| Not Designated as Hedging Instrument [Member] \| Commodity Contract [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	643	643
Fair Value of Assets	4	2
Fair Value of Liabilities	17	26
Financial Services [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	104,220	96,452
Fair Value of Assets	1,610	924
Fair Value of Liabilities	204	243
Counterparty netting - Derivative Asset, Fair Value, Amount Not Offset Against Collateral	(155)	(166)
Counterparty netting - Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(155)	(166)
Derivative Asset	1,455	758
Derivative Liability	49	77
Financial Services [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member] \| Fair Value Hedging [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	32,843	28,964
Fair Value of Assets	1,184	670
Fair Value of Liabilities	0	16
Financial Services [Member] \| Not Designated as Hedging Instrument [Member] \| Foreign Exchange Contract [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	2,138	1,713
Fair Value of Assets	49	22
Fair Value of Liabilities	8	4
Financial Services [Member] \| Not Designated as Hedging Instrument [Member] \| Interest Rate Contract [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	65,538	62,638
Fair Value of Assets	182	159
Fair Value of Liabilities	159	112
Financial Services [Member] \| Not Designated as Hedging Instrument [Member] \| Cross-currency interest rate swap contracts [Member]
Balance Sheet Effect of Derivative Instruments [Abstract]
Notional	3,701	3,137
Fair Value of Assets	195	73
Fair Value of Liabilities	$ 37	$ 111

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Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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Fair value, after the 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 not elected to be offset.

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