Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net cash provided by operating activities - continuing operations	$ 1,669	$ 1,355
Net cash provided by operating activities - discontinued operations	0	61
Net cash provided by operating activities	1,669	1,416
Cash flows from investing activities
Purchases of retail finance receivables, net	(5,073)	(5,475)
Principal collections and recoveries on retail finance receivables	3,576	2,810
Net collections (funding) of commercial finance receivables	32	(577)
Purchases of leased vehicles, net	(4,496)	(4,760)
Proceeds from termination of leased vehicles	2,379	1,079
Other investing activities	(20)	(20)
Net cash used in investing activities - continuing operations	(3,602)	(6,943)
Net cash provided by (used in) investing activities - discontinued operations	0	(140)
Net cash used in investing activities	(3,602)	(7,083)
Cash flows from financing activities
Net change in debt (original maturities less than three months)	23	(360)
Borrowings and issuances of secured debt	5,602	8,055
Payments on secured debt	(6,166)	(4,440)
Borrowings and issuances of unsecured debt	3,861	2,968
Payments on unsecured debt	(486)	(531)
Debt issuance costs	(40)	(27)
Dividends paid	(30)	0
Net cash provided by financing activities - continuing operations	2,764	5,665
Net cash provided by (used in) financing activities - discontinued operations	0	(10)
Net cash provided by financing activities	2,764	5,655
Net increase (decrease) in cash, cash equivalents and restricted cash	831	(12)
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	8	37
Cash, cash equivalents and restricted cash at beginning of period	6,567	5,302
Cash, cash equivalents and restricted cash at end of period	7,406	5,327
Supplemental Cash Flow Elements [Abstract]
Total	6,567	5,302
Continuing Operations [Member]
Cash flows from financing activities
Cash, cash equivalents and restricted cash at end of period	7,406	4,737
Supplemental Cash Flow Elements [Abstract]
Total	7,406	4,737
Discontinued Operations [Member]
Cash flows from financing activities
Cash, cash equivalents and restricted cash at end of period	0	590
Supplemental Cash Flow Elements [Abstract]
Total	$ 0	$ 590