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Derivatives - Gains/(Losses) on Derivatives Associated with Interest Rate Risk Management Activities (Details) - Hedging Instruments And Hedged Items - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Customer Interest Rate Contracts Hedging | Customer interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(losses) related to interest rate derivatives | $ (744) | $ (268) | $ 357
Customer Interest Rate Contracts Hedging | Offsetting upstream interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(losses) related to interest rate derivatives | 744 | 268 | (357)
Debt Hedging | Interest rate contracts |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(losses) related to interest rate derivatives | 0 | 0 | 2
Debt Hedging | Term Borrowings |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gains/(losses) related to term borrowings | $ 0 | $ 0 | $ (2)

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- Definition Gain Loss Related To Changes In Fair Value Of Term Borrowings Due To Interest Rate Risk + References No definition available. + Details
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- Definition Gains Losses Related To Interest Rate Derivatives + References No definition available. + Details
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