Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 2,802	$ 2,688	$ 5,533	$ 5,296
Income before income taxes	619	400	1,100	914
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	1,037	1,075	2,101	2,089
Interest expense	769	687	1,498	1,333
Provision for credit losses	99	137	251	265
Net finance receivables and net investment in operating leases	134,993	128,097	134,993	128,097
Total assets	150,494	145,567	150,494	145,567	$ 146,089
Unallocated Other
Segment Reporting Information [Line Items]
Total revenue	0	(28)	0	(35)
Income before income taxes	62	(28)	80	(35)
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	(7,207)	(6,107)	(7,207)	(6,107)
Total assets	0	0	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	2,802	2,716	5,533	5,331
Income before income taxes	557	428	1,020	949
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	1,037	1,075	2,101	2,089
Interest expense	769	687	1,498	1,333
Provision for credit losses	99	137	251	265
Net finance receivables and net investment in operating leases	142,200	134,204	142,200	134,204
Total assets	150,494	145,567	150,494	145,567
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	2,461	2,365	4,866	4,644
Income before income taxes	465	322	823	745
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	1,027	1,068	2,080	2,076
Interest expense	643	568	1,260	1,101
Provision for credit losses	86	128	230	241
Net finance receivables and net investment in operating leases	115,033	109,823	115,033	109,823
Total assets	120,704	117,966	120,704	117,966
Operating Segments [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Total revenue	233	266	461	517
Income before income taxes	74	97	151	178
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	10	7	21	13
Interest expense	62	74	123	144
Provision for credit losses	8	5	14	15
Net finance receivables and net investment in operating leases	21,740	20,654	21,740	20,654
Total assets	23,819	23,503	23,819	23,503
Operating Segments [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total revenue	108	85	206	170
Income before income taxes	18	9	46	26
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	64	45	115	88
Provision for credit losses	5	4	7	9
Net finance receivables and net investment in operating leases	5,427	3,727	5,427	3,727
Total assets	$ 5,971	$ 4,098	$ 5,971	$ 4,098