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Commitment and Contingencies - Narrative (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Other Commitments [Line Items] |  |
Fair Value | $ 9,159 | $ 9,074
Loans and leases held for investment, net of deferred loan fees and costs | 84,619 | 69,001
Asset pledged as collateral |  |
Other Commitments [Line Items] |  |
Fair Value | 2,800 | 434
Loans and leases held for investment, net of deferred loan fees and costs | $ 43,100 | $ 44,500

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