Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 761	$ 535
Unfunded commitments for investment in qualified affordable housing projects	408	372
Employee compensation and benefits	192	296
Reserves for insurance losses and loss adjustment expenses	142	122	$ 135	$ 134
Deferred revenue	54	36
Cash collateral received from counterparties	19	48
Net deferred tax liabilities	12	67
Fair value of derivative contracts in payable position	7	5
Other liabilities	515	491
Total accrued expenses and other liabilities	$ 2,110	$ 1,972