Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 2,688	$ 2,338	$ 5,296	$ 4,620
Income before income taxes	400	506	914	989
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	1,075	858	2,089	1,674
Interest expense	687	599	1,333	1,237
Provision for credit losses	137	72	265	139
Net finance receivables and net investment in operating leases	128,097	112,926	128,097	112,926
Total assets	145,567	127,599	145,567	127,599	$ 137,448
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Total revenue	(28)	(13)	(35)	(38)
Income before income taxes	(28)	(13)	(35)	(38)
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	0	0	0	0
Provision for credit losses	0	0	0	0
Net finance receivables and net investment in operating leases	(6,107)	(4,631)	(6,107)	(4,631)
Total assets	0	0	0	0
North America [Member]
Segment Reporting Information [Line Items]
Total revenue	2,288	1,951	4,490	3,848
Income before income taxes	297	406	691	785
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	1,069	849	2,077	1,660
Interest expense	538	448	1,041	930
Provision for credit losses	125	60	234	115
Net finance receivables and net investment in operating leases	108,431	94,831	108,431	94,831
Total assets	116,050	100,475	116,050	100,475
International Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	428	400	841	810
Income before income taxes	131	113	258	242
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	6	9	12	14
Interest expense	149	151	292	307
Provision for credit losses	12	12	31	24
Net finance receivables and net investment in operating leases	25,773	22,726	25,773	22,726
Total assets	29,517	27,124	29,517	27,124
Unallocated Risk Management [Member]
Segment Reporting Information [Line Items]
Total revenue	(28)	(13)	(35)	(38)
Income before income taxes	(28)	(13)	(35)	(38)
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	0	0	0	0
Provision for credit losses	0	0	0	0
Net finance receivables and net investment in operating leases	0	0	0	0
Total assets	0	0	0	0
Adjustment to Receivables [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Income before income taxes	0	0	0	0
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	0	0	0	0
Provision for credit losses	0	0	0	0
Net finance receivables and net investment in operating leases	(6,107)	(4,631)	(6,107)	(4,631)
Total assets	$ 0	$ 0	$ 0	$ 0