FAIR VALUE MEASUREMENTS - Schedule of Level 3 Input Reconciliation (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
[3],[4],[5] | |||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||||||||||||||
| Fair Value | $ 1,863,644 | [1],[2] | $ 1,863,644 | [1],[2] | $ 1,468,228 | |||||||||||||
| First-lien debt | ||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||||||||||||||
| Balance, beginning of period | 1,130,368 | $ 324,866 | 931,151 | $ 265,090 | ||||||||||||||
| Purchases | 259,374 | 120,101 | 501,320 | 178,555 | ||||||||||||||
| Paydowns | (28,121) | (223) | (107,146) | (430) | ||||||||||||||
| Accretion of discount | 1,053 | 359 | 1,571 | 619 | ||||||||||||||
| PIK interest | 0 | 241 | 2,777 | 292 | ||||||||||||||
| Net change in unrealized appreciation | 1,365 | 1,825 | (982) | 3,043 | ||||||||||||||
| Transfers into Level 3 | 104,019 | 194,515 | ||||||||||||||||
| Transfers out of Level 3 | 0 | (55,148) | ||||||||||||||||
| Balance, end of period | 1,468,058 | 447,169 | 1,468,058 | 447,169 | ||||||||||||||
| Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) | 1,154 | 1,825 | (782) | 3,043 | ||||||||||||||
| Preferred Equity and Other Equity | ||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||||||||||||||
| Balance, beginning of period | 11,990 | 9,367 | 9,329 | 5,987 | ||||||||||||||
| Purchases | 37,886 | 0 | 40,742 | 2,938 | ||||||||||||||
| Paydowns | 0 | 0 | 0 | 0 | ||||||||||||||
| Accretion of discount | 0 | 0 | 0 | 0 | ||||||||||||||
| PIK interest | 0 | 0 | 0 | 0 | ||||||||||||||
| Net change in unrealized appreciation | 923 | 331 | 728 | 773 | ||||||||||||||
| Transfers into Level 3 | 0 | 0 | ||||||||||||||||
| Transfers out of Level 3 | 0 | 0 | ||||||||||||||||
| Balance, end of period | 50,799 | 9,698 | 50,799 | 9,698 | ||||||||||||||
| Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) | 923 | 331 | 728 | 773 | ||||||||||||||
| Total | ||||||||||||||||||
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||||||||||||||||
| Balance, beginning of period | 1,142,358 | 334,233 | 940,480 | 271,077 | ||||||||||||||
| Purchases | 297,260 | 120,101 | 542,062 | 181,493 | ||||||||||||||
| Paydowns | (28,121) | (223) | (107,146) | (430) | ||||||||||||||
| Accretion of discount | 1,053 | 359 | 1,571 | 619 | ||||||||||||||
| PIK interest | 0 | 241 | 2,777 | 292 | ||||||||||||||
| Net change in unrealized appreciation | 2,288 | 2,156 | (254) | 3,816 | ||||||||||||||
| Transfers into Level 3 | 104,019 | 194,515 | ||||||||||||||||
| Transfers out of Level 3 | (0) | (55,148) | ||||||||||||||||
| Balance, end of period | 1,518,857 | 456,867 | 1,518,857 | 456,867 | ||||||||||||||
| Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss) | $ 2,077 | $ 2,156 | $ (54) | $ 3,816 | ||||||||||||||
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