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Derivative Instruments and Hedging Activities - Effects of Fair Value and Cash Flow Hedge Accounting (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest and dividend income, securities | $ 1,884 | $ 1,446 | $ 1,877
Interest and fee income, loans | 28,910 | 24,263 | 24,074
Interest and dividend income, other | 443 | 60 | 82
Deposits | (2,535) | (956) | (2,165)
Securitized debt obligations | (384) | (119) | (232)
Senior and subordinated notes | (1,074) | (488) | (679)
Non-interest income (loss) | 905 | 826 | 1,350
Amortization expense (benefit) | (78) | (39) | 12
Loss (net after-tax) recorded in AOCI related to derivatives designated as cash flow hedges expected to be reclassified to earnings over the next 12 months | $ 814 |  |
Maximum length of time over which forecasted transactions were hedged, years | 9 years 2 months 12 days |  |
Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Realized losses (gains) on foreign exchange contracts reclassified from AOCI | $ (17) | 163 | (57)
Cash flow hedges | Interest income - Investment securities |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | 0 | 38 | 25
Cash flow hedges | Interest income - Loans |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | (121) | 919 | 541
Cash flow hedges | Interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | 3 | 1 | 10
Cash flow hedges | Interest expense - Deposits |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | 0 | 0 | 0
Cash flow hedges | Interest expense - Securitized Debt Obligation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | 0 | 0 | 0
Cash flow hedges | Interest expense - Senior and Subordinated Debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | 0 | 0 | 0
Cash flow hedges | Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on cash flow hedges | (1) | 1 | (1)
Cash flow hedges | Interest rate contracts | Interest income - Investment securities |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 38 | 25
Cash flow hedges | Interest rate contracts | Interest income - Loans |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | (121) | 919 | 541
Cash flow hedges | Interest rate contracts | Interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Deposits |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Securitized Debt Obligation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Interest rate contracts | Interest expense - Senior and Subordinated Debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Interest rate contracts | Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest income - Investment securities |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest income - Loans |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 3 | 1 | 10
Cash flow hedges | Foreign exchange contracts | Interest expense - Deposits |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest expense - Securitized Debt Obligation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Interest expense - Senior and Subordinated Debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | 0 | 0 | 0
Cash flow hedges | Foreign exchange contracts | Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Reclassification adjustment from AOCI on derivatives, net of tax | (1) | 1 | (1)
Fair value hedges | Interest income - Investment securities |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | (42) | (184) | (92)
Fair value hedges | Interest income - Loans |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | 0 | 0 | 0
Fair value hedges | Interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | 0 | 0 | 0
Fair value hedges | Interest expense - Deposits |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | 6 | 125 | 109
Fair value hedges | Interest expense - Securitized Debt Obligation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | (47) | 106 | 89
Fair value hedges | Interest expense - Senior and Subordinated Debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | (34) | 348 | 268
Fair value hedges | Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net income (expense) recognized on fair value hedges | (1) | 0 | 1
Fair value hedges | Interest rate contracts | Interest income - Investment securities |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | 48 | (92) | (76)
Gains (losses) recognized on derivatives | 276 | 207 | (306)
Gains (losses) recognized on hedged items | (366) | (299) | 290
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Interest income - Loans |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | 0 | 0 | 0
Gains (losses) recognized on derivatives | 0 | 0 | 0
Gains (losses) recognized on hedged items | 0 | 0 | 0
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | 0 | 0 | 0
Gains (losses) recognized on derivatives | 0 | 0 | 0
Gains (losses) recognized on hedged items | 0 | 0 | 0
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Interest expense - Deposits |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | 2 | 126 | 108
Gains (losses) recognized on derivatives | (542) | (168) | 204
Gains (losses) recognized on hedged items | 546 | 167 | (203)
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Interest expense - Securitized Debt Obligation |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | (48) | 123 | 125
Gains (losses) recognized on derivatives | (698) | (237) | 176
Gains (losses) recognized on hedged items | 699 | 220 | (212)
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | 0 | 0 | 0
Fair value hedges | Interest rate contracts | Interest expense - Senior and Subordinated Debt |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | (197) | 209 | 225
Gains (losses) recognized on derivatives | (1,893) | (799) | 950
Gains (losses) recognized on hedged items | 2,059 | 941 | (904)
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | (3) | (3) | (3)
Fair value hedges | Interest rate contracts | Non interest income - Other |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Interest recognized on derivatives | 0 | 0 | 0
Gains (losses) recognized on derivatives | (84) | (106) | 126
Gains (losses) recognized on hedged items | 83 | 106 | (125)
Gain (Loss) from Components Excluded from Assessment of Fair Value Hedge Effectiveness, Net | $ 0 | $ 0 | $ 0

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