Accrued Expenses and Other Liabilities (Schedule of Accrued Expenses and Other Liabilities) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Accounts Payable and Accrued Liabilities [Abstract]
Accounts payable	$ 663	$ 602
Unfunded commitments for investment in qualified affordable housing projects	662	525
Employee compensation and benefits	348	316
Finance lease liabilities	326	0
Operating lease liabilities	167	187
Deferred revenue	146	104
Reserves for insurance losses and loss adjustment expenses	126	129	$ 132	$ 122
Fair value of derivative contracts in payable position	47	33
Net deferred tax liabilities	17	92
Cash collateral received from counterparties	4	6
Other liabilities	533	440
Total accrued expenses and other liabilities	$ 3,039	$ 2,434
Operating lease, liability, statement of financial position [Extensible List]	Total accrued expenses and other liabilities	Total accrued expenses and other liabilities