Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 516	$ 746
Unfunded commitments for investment in qualified affordable housing projects	319	240
Employee compensation and benefits	255	248
Reserves for insurance losses and loss adjustment expenses	134	140	$ 149	$ 169
Cash collateral received from counterparties	41	17
Fair value of derivative contracts in a payable position	37	41
Deferred revenue	27	32
Other liabilities	347	316
Total accrued expenses and other liabilities	$ 1,676	$ 1,780