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Fair Value (Reconciliation of Recurring Fair Value Measurements) (Details) - Fair Value, Recurring - Level 3 - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | $ 7,252 | $ 5,882
Included in Earnings | 109 | 412
Included in other comprehensive income | (13) | (28)
Purchases | 182 | 165
Sales | (71) | (20)
Issuances | 18 | 42
Settlements | (197) | (237)
Transfers into Level 3 | 6 | 5
Transfers out of Level 3 | (144) | (8)
Ending Balance | 7,142 | 6,213
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 102 | 421
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 421 | 463
Included in Earnings | 63 | 12
Purchases |  |
Sales | 2 | 3
Issuances | 21 | 73
Settlements | (176) | (156)
Ending Balance | 331 | 395
Unrealized gains/losses on liabilities held on Consolidated Balance Sheet | 62 | 14
Fair Value Additional Information [Abstract] |  |
Net gains (losses) included in earnings (realized and unrealized) relating to Level 3 assets and liabilities | 46 | 400
Net unrealized gains (losses) relating to Level 3 assets and liabilities | 40 | 407
Loans held for sale | Residential mortgage loans held for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 243 | 81
Included in Earnings | 4 | (1)
Purchases | 6 | 37
Sales | (1) | (2)
Settlements | (5) | (5)
Transfers into Level 3 | 3 | 5
Transfers out of Level 3 | (8) | (7)
Ending Balance | 242 | 108
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 3 | (1)
Loans held for sale | Commercial mortgage loans held for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 33 | 49
Included in Earnings | (1) | (4)
Settlements |  |
Ending Balance | 32 | 45
Unrealized gains/losses on assets held on Consolidated Balance Sheet |  | (3)
Securities available for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 1,001 | 1,332
Included in Earnings | 4 | 8
Included in other comprehensive income | (13) | (28)
Purchases |  | 1
Settlements | (31) | (73)
Transfers into Level 3 | 3 |
Ending Balance | 964 | 1,240
Securities available for sale | Residential mortgage-backed |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 819 | 1,097
Included in Earnings | 4 | 8
Included in other comprehensive income | (10) | (23)
Settlements | (26) | (63)
Ending Balance | 787 | 1,019
Securities available for sale | Commercial mortgage-backed |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 3 | 3
Included in other comprehensive income |  |
Ending Balance | 3 | 3
Securities available for sale | Asset-backed |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 124 | 163
Included in other comprehensive income | 1 | (4)
Settlements | (4) | (7)
Ending Balance | 121 | 152
Securities available for sale | Other |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 55 | 69
Included in other comprehensive income | (4) | (1)
Purchases |  | 1
Settlements | (1) | (3)
Transfers into Level 3 | 3 |
Ending Balance | 53 | 66
Loans |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 769 | 884
Included in Earnings | 3 | 11
Purchases | 9 | 13
Sales |  | (7)
Settlements | (22) | (49)
Transfers out of Level 3 | (2) | (1)
Ending Balance | 757 | 851
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 3 | 11
Equity investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 1,778 | 1,680
Included in Earnings | 121 | 53
Purchases | 140 | 29
Sales | (70) | (11)
Transfers out of Level 3 | (134) |
Ending Balance | 1,835 | 1,751
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 117 | 53
Mortgage Servicing Rights | Residential mortgage loans held for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 2,310 | 1,078
Included in Earnings | (48) | 207
Purchases | 18 | 76
Issuances | 5 | 21
Settlements | (53) | (60)
Ending Balance | 2,232 | 1,322
Unrealized gains/losses on assets held on Consolidated Balance Sheet | (47) | 208
Mortgage Servicing Rights | Commercial mortgage loans held for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 1,113 | 740
Included in Earnings | 9 | 151
Purchases | 8 | 8
Issuances | 13 | 21
Settlements | (82) | (34)
Ending Balance | 1,061 | 886
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 9 | 151
Financial derivatives |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 5 | 38
Included in Earnings | 17 | (13)
Purchases | 1 | 1
Settlements | (4) | (16)
Ending Balance | 19 | 10
Unrealized gains/losses on assets held on Consolidated Balance Sheet | 17 | 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 123 | 285
Included in Earnings | 39 | 5
Sales | 2 | 3
Settlements | (67) | (59)
Ending Balance | 97 | 234
Unrealized gains/losses on liabilities held on Consolidated Balance Sheet | 42 | 8
Other borrowed funds |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 4 | 3
Issuances | 3 | 2
Settlements | (2) | (2)
Ending Balance | 5 | 3
Other liabilities |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Beginning Balance | 294 | 175
Included in Earnings | 24 | 7
Issuances | 18 | 71
Settlements | (107) | (95)
Ending Balance | 229 | 158
Unrealized gains/losses on liabilities held on Consolidated Balance Sheet | $ 20 | $ 6

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