Available-for-Sale Securities, at Fair Value - Narrative (Details) - USD ($) $ in Thousands |
Mar. 31, 2025 |
Dec. 31, 2024 |
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| Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] | ||
| Total available-for-sale securities | $ 8,606,870 | $ 7,371,711 |
| Variable Interest Entity, Not Primary Beneficiary | ||
| Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] | ||
| Total available-for-sale securities | 3,600 | 3,700 |
| Maximum exposure to loss of nonconsolidated Variable Interest Entities | 3,600 | 3,700 |
| Asset Pledged as Collateral | ||
| Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] | ||
| Total available-for-sale securities | $ 8,600,000 | $ 7,100,000 |
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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