Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Total revenue	$ 2,156	$ 2,083	$ 1,983	$ 1,960	$ 1,941	$ 1,888	$ 1,846	$ 1,905	$ 8,182	$ 7,580	$ 8,064
Income before income taxes									1,756	1,697	2,404
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	734	629	553	481	484	459	409	423	2,397	1,775	1,115
Interest expense	674	691	682	683	709	741	774	803	2,730	3,027	3,507
Provision for credit losses	65	32	20	29	40	42	(51)	(24)	146	7	(118)
Net finance receivables and net investment in operating leases	99,913				88,616				99,913	88,616	82,043
Total assets	115,608				104,596				115,608	104,596	99,280
Adjustment to Receivables [Member]
Segment Reporting Information [Line Items]
Total revenue									0	0	0
Income before income taxes									0	0	0
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases									0	0	0
Interest expense									0	0	0
Provision for credit losses									0	0	0
Net finance receivables and net investment in operating leases	(3,497)				(3,081)				(3,497)	(3,081)	(3,171)
Total assets	0				0				0	0	0
North America Segment [Member]
Segment Reporting Information [Line Items]
Total revenue									6,708	6,166	6,241
Income before income taxes									1,438	1,550	2,159
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases									2,369	1,700	1,055
Interest expense									2,088	2,222	2,408
Provision for credit losses									114	18	(119)
Net finance receivables and net investment in operating leases	83,722				74,509				83,722	74,509	66,748
Total assets	90,720				81,751				90,720	81,751	75,360
International Segment [Member]
Segment Reporting Information [Line Items]
Total revenue									1,527	1,523	1,958
Income before income taxes									371	249	371
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases									28	75	60
Interest expense									642	812	1,108
Provision for credit losses									32	(11)	1
Net finance receivables and net investment in operating leases	19,688				17,188				19,688	17,188	18,466
Total assets	24,888				22,845				24,888	22,845	23,920
Unfavorable cumulative pre-tax adjustment									37
Total Unallocated/Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue									(53)	(109)	(135)
Income before income taxes									(53)	(102)	(126)
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases									0	0	0
Interest expense									0	(7)	(9)
Provision for credit losses									0	0	0
Net finance receivables and net investment in operating leases	(3,497)				(3,081)				(3,497)	(3,081)	(3,171)
Total assets	0				0				0	0	0
Unallocated Risk Management [Member]
Segment Reporting Information [Line Items]
Total revenue									(53)	(109)	(135)
Income before income taxes									(53)	(102)	(126)
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases									0	0	0
Interest expense									0	(7)	(9)
Provision for credit losses									0	0	0
Net finance receivables and net investment in operating leases	0				0				0	0	0
Total assets	$ 0				$ 0				$ 0	$ 0	$ 0