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Investment Securities - Narrative (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Feb. 01, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Transfer, Amount | $ 10,700,000 |  |  |
Debt Securities, Held-To-Maturity, After Allowance for Credit Loss, Transfer, Amount | 10,900,000 |  |  |
Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss, Transfer, Amount | 485,900,000 |  |  |
Debt Securities, Available-for-Sale, after Allowance for Credit Loss, Transfer, Amount | 463,600,000 |  |  |
Debt Securities, Held-to-maturity, Transfer to Trading, Unrealized Gain (Loss) | $ 0 |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss |  | $ 0 | $ 0 |
Debt Securities, Available-for-sale, Realized Loss |  | (46,800,000) | (2,100,000) | $ 0
Debt Securities, Available-for-sale, Realized Gain |  | 300,000 | $ 3,200,000 | $ 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings |  | (46,300,000) |  |
Debt Securities, Held-to-maturity, Nonaccrual |  | 0 |  |
Treasury Security |  |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Realized Loss |  | 22,100,000 |  |
Collateral |  |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities |  | 0 |  |
Treasury Security |  |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Realized Loss |  | $ 24,200,000 |  |

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References No definition available. + Details
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