Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 1,265	$ 846
Cash flows from investing activities:
Purchases of consumer finance receivables, net	(8,366)	(6,827)
Principal collections and recoveries on consumer finance receivables	5,716	5,300
Net funding of commercial finance receivables	(37)	(239)
Purchases of leased vehicles, net	(6,724)	(1,856)
Proceeds from termination of leased vehicles	468	264
Acquisition of international operations	(1,049)	(46)
Disposition of equity interest	125	0
Purchases of property and equipment	(44)	(15)
Change in restricted cash	(140)	(236)
Change in other assets	17	(2)
Net cash used in investing activities	(10,034)	(3,657)
Cash flows from financing activities:
Net change in debt (original maturities less than three months)	(150)	278
Borrowings and issuance of secured debt	9,791	10,722
Payments on secured debt	(7,406)	(8,445)
Borrowings and issuance of unsecured debt	6,697	1,472
Payments on unsecured debt	(871)	(838)
Debt issuance costs	(101)	(49)
Net cash provided by financing activities	7,960	3,140
Net (decrease) increase in cash and cash equivalents	(809)	329
Effect of foreign exchange rate changes on cash and cash equivalents	(95)	9
Cash and cash equivalents at beginning of period	2,974	1,074
Cash and cash equivalents at end of period	2,070	1,412
Supplemental cash flow information:
Subvention receivable from GM	399	147
Commercial loan funding payable to GM	$ 401	$ 427