Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 2,793	$ 3,188	$ 5,825	$ 6,382
Income before income taxes	543	831	573	1,632
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(990)	(894)	(2,042)	(1,818)
Interest expense	839	1,114	1,823	2,235
Provision for credit losses	93	63	679	96
Net finance receivables and net investment in operating leases	130,303	143,479	130,303	143,479
Total assets	155,276	164,018	155,276	164,018	$ 161,426
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	2,793	3,188	5,825	6,382
Income before income taxes	527	739	573	1,533
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(990)	(894)	(2,042)	(1,818)
Interest expense	863	1,116	1,863	2,229
Provision for credit losses	93	63	679	96
Net finance receivables and net investment in operating leases	139,383	151,922	139,383	151,922
Total assets	155,276	164,018	155,276	164,018
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	2,448	2,716	5,079	5,427
Income before income taxes	445	589	467	1,211
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(990)	(885)	(2,029)	(1,797)
Interest expense	726	939	1,571	1,870
Provision for credit losses	76	48	596	88
Net finance receivables and net investment in operating leases	111,775	118,990	111,775	118,990
Total assets	124,375	127,482	124,375	127,482
Operating Segments [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Total revenue	244	307	525	610
Income before income taxes	65	113	82	227
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	(9)	(13)	(21)
Interest expense	82	86	172	166
Provision for credit losses	14	7	67	12
Net finance receivables and net investment in operating leases	23,659	27,224	23,659	27,224
Total assets	26,091	30,094	26,091	30,094
Operating Segments [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total revenue	101	165	221	345
Income before income taxes	17	37	24	95
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	55	91	120	193
Provision for credit losses	3	8	16	(4)
Net finance receivables and net investment in operating leases	3,949	5,708	3,949	5,708
Total assets	4,810	6,442	4,810	6,442
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0	0	0
Income before income taxes	16	92	0	99
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0	0	0
Interest expense	(24)	(2)	(40)	6
Provision for credit losses	0	0	0	0
Net finance receivables and net investment in operating leases	(9,080)	(8,443)	(9,080)	(8,443)
Total assets	$ 0	$ 0	$ 0	$ 0