Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 602	$ 535
Unfunded commitments for investment in qualified affordable housing projects	525	372
Employee compensation and benefits	316	296
Operating lease, liabilities	187	196
Reserves for insurance losses and loss adjustment expenses	129	122	$ 134	$ 140
Deferred revenue	104	36
Net deferred tax liabilities	92	67
Fair value of derivative contracts in payable position	33	5
Cash collateral received from counterparties	6	48
Other liabilities	440	295
Total accrued expenses and other liabilities	$ 2,434	$ 1,972