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Derivatives - Derivatives Associated with Interest Rate Risk Management Activities (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Customer interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Notional | $ 4,158 | $ 4,067
Assets | 37 | 22
Liabilities | 132 | 197
Customer interest rate contracts | Customer Interest Rate Contracts Hedging | Hedging Instruments And Hedged Items |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Notional | 8,385 | 8,375
Assets | 48 | 21
Liabilities | 257 | 392
Offsetting upstream interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Notional | 4,329 | 4,273
Assets | 89 | 135
Liabilities | 38 | 23
Offsetting upstream interest rate contracts | Customer Interest Rate Contracts Hedging | Hedging Instruments And Hedged Items |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Notional | 8,385 | 8,375
Assets | 255 | 389
Liabilities | $ 48 | $ 22

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- Definition Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. + References No definition available. + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References No definition available. + Details
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