Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 2,863	$ 2,796	$ 8,396	$ 8,092
Income before income taxes	600	567	1,700	1,481
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	989	1,085	3,090	3,174
Interest expense	810	697	2,308	2,030
Provision for credit losses	169	138	420	403
Net finance receivables and net investment in operating leases	137,528	127,852	137,528	127,852
Total assets	154,478	142,992	154,478	142,992	$ 146,089
Unallocated Other
Segment Reporting Information [Line Items]
Total revenue	0	45	0	10
Income before income taxes	20	45	100	10
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	(7,579)	(6,573)	(7,579)	(6,573)
Total assets	0	0	0	0
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	2,863	2,751	8,396	8,082
Income before income taxes	580	522	1,600	1,471
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	989	1,085	3,090	3,174
Interest expense	810	697	2,308	2,030
Provision for credit losses	169	138	420	403
Net finance receivables and net investment in operating leases	145,107	134,425	145,107	134,425
Total assets	154,478	142,992	154,478	142,992
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	2,493	2,419	7,359	7,063
Income before income taxes	485	423	1,308	1,168
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	975	1,072	3,055	3,149
Interest expense	669	586	1,930	1,687
Provision for credit losses	159	128	389	369
Net finance receivables and net investment in operating leases	115,331	111,110	115,331	111,110
Total assets	120,398	116,462	120,398	116,462
Operating Segments [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Total revenue	247	244	709	761
Income before income taxes	72	79	223	257
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	14	13	35	25
Interest expense	65	69	187	213
Provision for credit losses	7	6	21	21
Net finance receivables and net investment in operating leases	23,855	19,266	23,855	19,266
Total assets	27,323	22,150	27,323	22,150
Operating Segments [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total revenue	123	88	328	258
Income before income taxes	23	20	69	46
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	76	42	191	130
Provision for credit losses	3	4	10	13
Net finance receivables and net investment in operating leases	5,921	4,049	5,921	4,049
Total assets	$ 6,757	$ 4,380	$ 6,757	$ 4,380