Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 904	$ 535
Unfunded commitments for investment in qualified affordable housing projects	397	372
Employee compensation and benefits	229	296
Reserves for insurance losses and loss adjustment expenses	132	122	$ 153	$ 134
Deferred revenue	76	36
Net deferred tax liabilities	24	67
Cash collateral received from counterparties	12	48
Fair value of derivative contracts in payable position	2	5
Other liabilities	523	491
Total accrued expenses and other liabilities	$ 2,299	$ 1,972