Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total revenue	$ 2,478	$ 2,312	$ 7,098	$ 6,705
Income before income taxes	541	498	1,530	1,431
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	956	801	2,630	2,248
Interest expense	582	663	1,819	2,002
Provision for credit losses	100	57	239	115
Net finance receivables and net investment in operating leases	117,190	106,113	117,190	106,113
Total assets	131,490	121,216	131,490	121,216	$ 122,108
North America Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	2,054	1,883	5,902	5,470
Income before income taxes	415	374	1,200	1,069
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	947	791	2,607	2,218
Interest expense	431	498	1,361	1,521
Provision for credit losses	84	48	199	94
Net finance receivables and net investment in operating leases	99,241	88,599	99,241	88,599
Total assets	104,067	95,491	104,067	95,491
International Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	421	438	1,231	1,258
Income before income taxes	123	133	365	385
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	9	10	23	30
Interest expense	151	165	458	481
Provision for credit losses	16	9	40	21
Net finance receivables and net investment in operating leases	23,139	21,766	23,139	21,766
Total assets	27,423	25,725	27,423	25,725
Unallocated Risk Management [Member]
Segment Reporting Information [Line Items]
Total revenue	3	(9)	(35)	(23)
Income before income taxes	3	(9)	(35)	(23)
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	(5,190)	(4,252)	(5,190)	(4,252)
Total assets	0	0	0	0
Total Unallocated/Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	3	(9)	(35)	(23)
Income before income taxes	3	(9)	(35)	(23)
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	(5,190)	(4,252)	(5,190)	(4,252)
Total assets	$ 0	$ 0	$ 0	$ 0