Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Total revenue	$ 2,159	$ 1,960
Income before income taxes	499	507
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	705	481
Interest expense	666	683
Provision for credit losses	31	29
Net finance receivables and net investment in operating leases	102,878	91,326
Total assets	118,364	105,936	115,608
Adjustment to Receivables [Member]
Segment Reporting Information [Line Items]
Total revenue	0	0
Income before income taxes	0	0
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0
Interest expense	0	0
Provision for credit losses	0	0
Net finance receivables and net investment in operating leases	(3,587)	(2,999)
Total assets	0	0
North America Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	1,769	1,582
Income before income taxes	378	407
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	695	476
Interest expense	512	517
Provision for credit losses	29	22
Net finance receivables and net investment in operating leases	85,130	76,829
Total assets	92,566	83,523
International Segment [Member]
Segment Reporting Information [Line Items]
Total revenue	401	369
Income before income taxes	132	91
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	10	5
Interest expense	154	166
Provision for credit losses	2	7
Net finance receivables and net investment in operating leases	21,335	17,496
Total assets	25,798	22,413
Total Unallocated/Eliminations [Member]
Segment Reporting Information [Line Items]
Total revenue	(11)	9
Income before income taxes	(11)	9
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0
Interest expense	0	0
Provision for credit losses	0	0
Net finance receivables and net investment in operating leases	(3,587)	(2,999)
Total assets	0	0
Unallocated Risk Management [Member]
Segment Reporting Information [Line Items]
Total revenue	(11)	9
Income before income taxes	(11)	9
Other disclosures [Abstract]
Depreciation on vehicles subject to operating leases	0	0
Interest expense	0	0
Provision for credit losses	0	0
Net finance receivables and net investment in operating leases	0	0
Total assets	$ 0	$ 0