Financing Agreements - Borrowings Under Repurchase Agreement (Details) - Repurchase Agreement Borrowings - Held at Fair Value - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost Basis | $ 4,637,951 | $ 4,395,375 |
| Weighted Average Interest Rate | 4.32% | 4.49% |
| Within 30 days | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost Basis | $ 4,637,951 | $ 4,395,375 |
| Weighted Average Interest Rate | 4.32% | 4.49% |
| Over 30 days to 3 months | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost Basis | $ 0 | $ 0 |
| Weighted Average Interest Rate | 0.00% | 0.00% |
| Over 3 months to 12 months | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost Basis | $ 0 | $ 0 |
| Weighted Average Interest Rate | 0.00% | 0.00% |
| Over 12 months | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost Basis | $ 0 | $ 0 |
| Weighted Average Interest Rate | 0.00% | 0.00% |