Other Assets (Summary of Equity Securities without Readily Determinable Fair Value) (Details) - USD ($) |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Other Assets [Abstract] | |||
FHLB stock | $ 318,000,000 | $ 289,000,000 | |
FRB stock | 401,000,000 | 449,000,000 | |
Equity investments without a readily determinable fair value | |||
Cost basis at acquisition | 89,000,000 | 89,000,000 | |
Upward adjustments | 177,000,000 | 183,000,000 | |
Downward adjustments (including impairment) | (143,000,000) | (12,000,000) | |
Carrying amount, equity investments without a readily determinable fair value | 123,000,000 | 260,000,000 | |
Nonmarketable equity investments | 842,000,000 | 998,000,000 | |
Upward adjustments | 1,000,000 | 88,000,000 | |
Downward adjustments (including impairment) | (138,000,000) | (1,000,000) | |
Impairment of FHLB and FRB stock | 0 | 0 | |
(Loss) gain on nonmarketable equity investments, net | $ (132,000,000) | $ 142,000,000 | $ 99,000,000 |