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v3.23.2

Investment Securities - Additional Information (Detail) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) assetBackedSecurity security corporateNote | Jun. 30, 2023 USD ($) assetBackedSecurity security corporateNote | Jun. 30, 2022 USD ($) assetBackedSecurity | Jun. 30, 2023 USD ($) assetBackedSecurity security corporateNote | Jun. 30, 2022 USD ($) assetBackedSecurity | Dec. 31, 2022 USD ($) security
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Proceeds from sales of investment securities available for sale |  | $ 0 | $ 399,000,000 | $ 0 | $ 554,965,000 |
Number of available-for-sale investment securities, unrealized loss position, less than twelve month category | security | 40 | 40 |  | 40 |  |
Number of available-for-sale investment securities, unrealized loss position, twelve month or more category | security | 121 | 121 |  | 121 |  |
Number of asset-backed securities with deterioration in future estimated cash flows | assetBackedSecurity | 4 | 4 | 4 | 4 | 4 |
Number of corporate notes with deterioration in future estimated cash flows | corporateNote | 9 | 9 |  | 9 |  |
Number of available-for-sale investment securities, unrealized loss position | security | 161 | 161 |  | 161 |  | 156
Debt securities, available for sale | $ 2,797,940,000 | $ 2,797,940,000 |  | $ 2,797,940,000 |  | $ 2,961,015,000
Net loss on sale of loans |  |  |  | 1,200,000 |  |
Investment securities held to maturity | 1,258,560,000 | 1,258,560,000 |  | 1,258,560,000 |  | 840,259,000
Servicing assets | 3,800,000 | 3,800,000 |  | 3,800,000 |  |
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest | 0 | 0 |  | 0 |  | 0
Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Investment securities held to maturity | 436,800,000 | 436,800,000 |  | 436,800,000 |  |
Asset-backed securities |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Debt securities, available for sale | 126,537,000 | 126,537,000 |  | 126,537,000 |  | 160,542,000
Investment securities held to maturity | 719,551,000 | 719,551,000 |  | 719,551,000 |  | 361,107,000
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest | 0 | 0 |  | 0 |  | 0
Consumer Loan, Held-For-Sale | Personal And Other Installment Loans |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Carrying value of consumer loans sold | 556,700,000 |  |  |  |  |
Consumer Loan, Held-For-Sale | Other Installment Loans |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Carrying value of consumer loans sold |  | 154,000,000 |  |  |  |
Asset Pledged as Collateral |  |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |  |
Debt securities, available for sale | 1,500,000,000 | 1,500,000,000 |  | 1,500,000,000 |  |
Debt securities | $ 426,800,000 | $ 426,800,000 |  | $ 426,800,000 |  | $ 16,700,000

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