Other Income, Net of Losses (Schedule of Other Income, Net of Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Nonoperating Income (Expense) [Abstract]
Remarketing Fees	$ 29	$ 28
Fees and Commissions, Other	27	25
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets	16	13
Income (Loss) from Equity Method Investments	0	6
Other Income	43	23
Noninterest Income, Other Operating Income	$ 115	$ 95