Other Assets and Other Liabilities and Deferred Income (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jan. 01, 2017	Dec. 31, 2016
Other Assets [Abstract]
Accrued interest and other non-finance receivables	$ 934		$ 889
Prepaid reinsurance premiums and other reinsurance receivables	577		546
Collateral held for resale, at net realizable value	524		621
Deferred charges - income taxes	218		205
Investment in non-consolidated affiliates	180		153
Property and equipment, net of accumulated depreciation	166		156
Deferred charges	126		122
Restricted cash	102		108
Other	32		22
Total other assets	2,859		2,822
Accumulated depreciation	361		347
Other Liabilities and Deferred Income [Abstract]
Interest payable	687		661
Unearned insurance premiums and fees	686		650
Income tax and related interest	258		294
Deferred revenue	151		143
Payroll and employee benefits	58		51
Other	226		198
Total other liabilities and deferred income	2,066		1,997
Deferred Revenue, Admission Fees	128	$ 120	$ 120
Admission Fee Revenue	$ 14