Fair Value Measurements - Schedule of Significant Unobservable Inputs Used in the Fair Value Measurement of Senior Asset-Backed Securities (Details) - Senior asset-backed securities related to Structured Program transactions - Discount rate |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Minimum | ||
| Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items] | ||
| Measurement input, debt securities available-for-sale | 0.053 | 0.050 |
| Maximum | ||
| Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items] | ||
| Measurement input, debt securities available-for-sale | 0.068 | 0.054 |
| Weighted Average | ||
| Fair Value Inputs Assets And Liabilities Quantitative Information [Line Items] | ||
| Measurement input, debt securities available-for-sale | 0.056 | 0.052 |