Other Assets and Other Liabilities and Deferred Income (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Jan. 01, 2017	Dec. 31, 2016
Other Assets [Abstract]
Accrued interest and other non-finance receivables	$ 1,048		$ 889
Collateral held for resale, at net realizable value	607		621
Prepaid reinsurance premiums and other reinsurance receivables	594		546
Deferred charges - income taxes	244		205
Property and equipment, net of accumulated depreciation	176		156
Deferred charges	129		122
Restricted cash	121		108
Investment in non-consolidated affiliates	113		153
Other	43		22
Total other assets	3,075		2,822
Accumulated depreciation	359		347
Other Liabilities and Deferred Income [Abstract]
Unearned insurance premiums and fees	706		650
Interest payable	535		661
Income tax and related interest	281		294
Deferred revenue	152		143
Payroll and employee benefits	65		51
Other	281		198
Total other liabilities and deferred income	2,020		1,997
Deferred Revenue, Admission Fees	128	$ 120	$ 120
Admission Fee Revenue	$ 21