Debt Obligations - Summary of Repurchase Agreements (Details) - USD ($) $ in Thousands |
1 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Apr. 30, 2026 |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Borrowings Outstanding and Carrying Value | $ 1,323,921 | $ 1,857,614 | |||||||||||||||||
| Repurchase Agreements and Term Participation Facility [Member] | |||||||||||||||||||
| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Maximum Capacity | 2,941,123 | 3,830,740 | |||||||||||||||||
| Borrowings Outstanding and Carrying Value | 1,323,921 | 1,857,614 | |||||||||||||||||
| Undrawn Capacity | 1,617,202 | 1,973,126 | |||||||||||||||||
| Carrying Value of Collateral | $ 2,050,167 | [1] | $ 2,787,035 | [2] | |||||||||||||||
| Repurchase Agreements and Term Participation Facility [Member] | JP Morgan Chase Bank NA [Member] | |||||||||||||||||||
| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Initial Maturity | Jul. 28, 2027 | Jul. 28, 2026 | |||||||||||||||||
| Fully Extended Maturity | Jul. 28, 2030 | [3] | Jul. 28, 2028 | [4] | |||||||||||||||
| Maximum Capacity | $ 1,882,487 | $ 1,882,487 | |||||||||||||||||
| Borrowings Outstanding and Carrying Value | 531,589 | 880,675 | |||||||||||||||||
| Undrawn Capacity | 1,350,898 | 1,001,812 | |||||||||||||||||
| Carrying Value of Collateral | $ 980,354 | [1] | $ 1,479,384 | [2] | |||||||||||||||
| Repurchase Agreements and Term Participation Facility [Member] | JP Morgan Chase Bank NA II [Member] | |||||||||||||||||||
| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Initial Maturity | Mar. 31, 2028 | [5] | Mar. 31, 2028 | [6] | |||||||||||||||
| Fully Extended Maturity | Mar. 31, 2030 | [3],[5] | Mar. 31, 2030 | [4],[6] | |||||||||||||||
| Maximum Capacity | $ 808,636 | [5] | $ 948,253 | [6] | |||||||||||||||
| Borrowings Outstanding and Carrying Value | 792,332 | [5] | 926,939 | [6] | |||||||||||||||
| Undrawn Capacity | 16,304 | [5] | 21,314 | [6] | |||||||||||||||
| Carrying Value of Collateral | $ 1,069,813 | [1],[5] | $ 1,193,842 | [2],[6] | |||||||||||||||
| Repurchase Agreements and Term Participation Facility [Member] | Morgan Stanley Bank NA [Member] | |||||||||||||||||||
| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Initial Maturity | Jan. 26, 2027 | Jan. 26, 2026 | |||||||||||||||||
| Fully Extended Maturity | Jan. 26, 2028 | [3] | Jan. 26, 2028 | [4] | |||||||||||||||
| Maximum Capacity | $ 250,000 | $ 750,000 | |||||||||||||||||
| Borrowings Outstanding and Carrying Value | 0 | 50,000 | |||||||||||||||||
| Undrawn Capacity | 250,000 | 700,000 | |||||||||||||||||
| Carrying Value of Collateral | $ 0 | [1] | $ 113,809 | [2] | |||||||||||||||
| Repurchase Agreements and Term Participation Facility [Member] | Wells Fargo Bank NA [Member] | |||||||||||||||||||
| Repurchase Agreement Counterparty [Line Items] | |||||||||||||||||||
| Initial Maturity | Jul. 29, 2026 | Apr. 30, 2026 | [7] | ||||||||||||||||
| Fully Extended Maturity | [4],[7] | Apr. 30, 2028 | |||||||||||||||||
| Maximum Capacity | [7] | $ 250,000 | |||||||||||||||||
| Borrowings Outstanding and Carrying Value | [7] | 0 | |||||||||||||||||
| Undrawn Capacity | [7] | 250,000 | |||||||||||||||||
| Carrying Value of Collateral | [2],[7] | $ 0 | |||||||||||||||||
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