Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 3,032	$ 3,194
Income before income taxes	30	801
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(1,052)	(924)
Interest expense	984	1,121
Provision for credit losses	586	33
Net finance receivables and net investment in operating leases	137,776	146,856
Total assets	156,816	165,415	$ 161,426
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	3,032	3,194
Income before income taxes	46	794
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(1,052)	(924)
Interest expense	1,000	1,113
Provision for credit losses	586	33
Net finance receivables and net investment in operating leases	146,386	155,274
Total assets	156,816	165,415
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Total revenue	2,631	2,711
Income before income taxes	22	622
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(1,039)	(912)
Interest expense	845	931
Provision for credit losses	520	40
Net finance receivables and net investment in operating leases	118,006	121,735
Total assets	123,917	127,575
Operating Segments [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Total revenue	281	303
Income before income taxes	17	114
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	(13)	(12)
Interest expense	90	80
Provision for credit losses	53	5
Net finance receivables and net investment in operating leases	24,346	27,066
Total assets	27,604	30,537
Operating Segments [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total revenue	120	180
Income before income taxes	7	58
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0
Interest expense	65	102
Provision for credit losses	13	(12)
Net finance receivables and net investment in operating leases	4,034	6,473
Total assets	5,295	7,303
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0
Income before income taxes	(16)	7
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0
Interest expense	(16)	8
Provision for credit losses	0	0
Net finance receivables and net investment in operating leases	(8,610)	(8,418)
Total assets	$ 0	$ 0