Finance Receivables Net (Details) (USD $)	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Wholesale Loans Percentage of Dealer Financing	94.00%
Net Finance Receivables [Abstract]
Financing Receivables	$ 85,522,000,000		$ 81,993,000,000	$ 79,075,000,000
Less: Allowance for credit losses	(325,000,000)	(327,000,000)	(357,000,000)	(349,000,000)	(353,000,000)	(385,000,000)
Finance receivables, net	85,197,000,000		81,636,000,000	78,726,000,000
Net finance receivables subject to fair value	83,529,000,000		79,969,000,000
Fair value	85,180,000,000		81,658,000,000
Finance receivables not subject to fair value	1,700,000,000		1,700,000,000
Other Assets on Statement of Financial Position [Member]
Net Finance Receivables [Abstract]
Uncollected interest receivable excluded from finance receivable	185,000,000		196,000,000
Consumer Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	53,571,000,000		50,197,000,000
Consumer Portfolio Segment [Member] | Retail [Member]
Net Finance Receivables [Abstract]
Finance receivables before unearned interest supplements	55,321,000,000		51,699,000,000
Less: Unearned interest supplements	(1,750,000,000)		(1,502,000,000)
Commercial Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	31,951,000,000		31,796,000,000
Commercial Portfolio Segment [Member] | Dealer Financing [Member]
Net Finance Receivables [Abstract]
Financing Receivables	30,755,000,000		30,371,000,000
Commercial Portfolio Segment [Member] | Other [Member]
Net Finance Receivables [Abstract]
Financing Receivables	1,196,000,000		1,425,000,000
North America Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	64,395,000,000		62,836,000,000
Less: Allowance for credit losses	(256,000,000)		(280,000,000)
Finance receivables, net	64,139,000,000		62,556,000,000
North America Segment [Member] | Consumer Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	42,026,000,000		39,647,000,000
North America Segment [Member] | Consumer Portfolio Segment [Member] | Retail [Member]
Net Finance Receivables [Abstract]
Finance receivables before unearned interest supplements	43,537,000,000		40,902,000,000
Less: Unearned interest supplements	(1,511,000,000)		(1,255,000,000)
North America Segment [Member] | Commercial Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	22,369,000,000		23,189,000,000
North America Segment [Member] | Commercial Portfolio Segment [Member] | Dealer Financing [Member]
Net Finance Receivables [Abstract]
Financing Receivables	21,495,000,000		22,139,000,000
North America Segment [Member] | Commercial Portfolio Segment [Member] | Wholesale [Member] | Subsidiary of Common Parent [Member]
Net Finance Receivables [Abstract]
Financing Receivables	41,000,000		67,000,000
North America Segment [Member] | Commercial Portfolio Segment [Member] | Other [Member]
Net Finance Receivables [Abstract]
Financing Receivables	874,000,000		1,050,000,000
International Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	21,127,000,000		19,157,000,000
Less: Allowance for credit losses	(69,000,000)		(77,000,000)
Finance receivables, net	21,058,000,000		19,080,000,000
International Segment [Member] | Consumer Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	11,545,000,000		10,550,000,000
International Segment [Member] | Consumer Portfolio Segment [Member] | Retail [Member]
Net Finance Receivables [Abstract]
Finance receivables before unearned interest supplements	11,784,000,000		10,797,000,000
Less: Unearned interest supplements	(239,000,000)		(247,000,000)
International Segment [Member] | Commercial Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Financing Receivables	9,582,000,000		8,607,000,000
International Segment [Member] | Commercial Portfolio Segment [Member] | Dealer Financing [Member]
Net Finance Receivables [Abstract]
Financing Receivables	9,260,000,000		8,232,000,000
International Segment [Member] | Commercial Portfolio Segment [Member] | Wholesale [Member] | Subsidiary of Common Parent [Member]
Net Finance Receivables [Abstract]
Financing Receivables	494,000,000		399,000,000
International Segment [Member] | Commercial Portfolio Segment [Member] | Other [Member]
Net Finance Receivables [Abstract]
Financing Receivables	322,000,000		375,000,000
Securitization Transactions [Member] | North America Segment [Member] | Consumer Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Amount of finance receivables that secure certain debt obligations	19,300,000,000		21,800,000,000
Securitization Transactions [Member] | North America Segment [Member] | Commercial Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Amount of finance receivables that secure certain debt obligations	17,300,000,000		18,900,000,000
Securitization Transactions [Member] | International Segment [Member] | Consumer Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Amount of finance receivables that secure certain debt obligations	4,700,000,000		5,900,000,000
Securitization Transactions [Member] | International Segment [Member] | Commercial Portfolio Segment [Member]
Net Finance Receivables [Abstract]
Amount of finance receivables that secure certain debt obligations	$ 3,800,000,000		$ 5,000,000,000