Fair Value of Financial Instruments - Schedule of Changes in the Fair Value of Investments (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
$ 68,419
|
$ 103,163
|
$ (396,501)
|
$ 164,588
|
| First-Lien Senior Secured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
11,167,671
|
9,517,297
|
10,660,972
|
4,341,268
|
| Purchases of investments, net |
304,364
|
557,660
|
1,940,747
|
1,617,352
|
| Payment-in-kind |
13,839
|
18,949
|
41,735
|
39,124
|
| Proceeds from investments, net |
(248,241)
|
(571,306)
|
(1,194,253)
|
(1,043,413)
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
36,940
|
2,150
|
(164,103)
|
21,436
|
| Net amortization/accretion of discount/premium on investments |
5,394
|
8,193
|
18,788
|
19,023
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
0
|
612
|
|
0
|
| Transfers in from the Mergers |
|
|
(14,297)
|
4,532,185
|
| Fair Value, End of Period |
11,281,471
|
9,531,081
|
11,281,471
|
9,531,081
|
| First-Lien Senior Secured | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
6
|
3,801
|
(15,439)
|
7,329
|
| First-Lien Senior Secured | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
38,438
|
(4,125)
|
(156,782)
|
18,213
|
| Second-Lien Senior Secured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
433,144
|
310,288
|
442,717
|
166,159
|
| Purchases of investments, net |
0
|
0
|
659
|
61,325
|
| Payment-in-kind |
2,605
|
4,054
|
7,535
|
13,119
|
| Proceeds from investments, net |
0
|
0
|
0
|
(41,117)
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
(1,634)
|
1,817
|
(58,419)
|
1,371
|
| Net amortization/accretion of discount/premium on investments |
588
|
479
|
1,693
|
2,043
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
(50,274)
|
0
|
|
0
|
| Transfers in from the Mergers |
|
|
0
|
116,990
|
| Fair Value, End of Period |
390,952
|
316,638
|
390,952
|
316,638
|
| Second-Lien Senior Secured | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
0
|
0
|
0
|
(12,198)
|
| Second-Lien Senior Secured | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
4,889
|
1,817
|
(61,652)
|
10,317
|
| Unsecured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
464,478
|
451,319
|
477,128
|
336,635
|
| Purchases of investments, net |
0
|
4,694
|
631
|
4,692
|
| Payment-in-kind |
9,180
|
8,033
|
21,037
|
21,748
|
| Proceeds from investments, net |
0
|
0
|
(32,980)
|
(33,358)
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
(204)
|
(1,293)
|
(5,431)
|
10,037
|
| Net amortization/accretion of discount/premium on investments |
5,376
|
5,375
|
16,110
|
15,889
|
| Transfers between investment types |
|
759
|
|
759
|
| Transfers into (out of) Level 3 |
0
|
0
|
|
0
|
| Transfers in from the Mergers |
|
|
0
|
111,857
|
| Fair Value, End of Period |
478,830
|
468,887
|
478,830
|
468,887
|
| Unsecured | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
0
|
0
|
2,335
|
85
|
| Unsecured | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
(204)
|
(1,293)
|
(5,431)
|
10,580
|
| Specialty Finance |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
40,774
|
31,470
|
37,452
|
5,041
|
| Purchases of investments, net |
1,712
|
4,859
|
4,541
|
10,461
|
| Payment-in-kind |
104
|
428
|
798
|
600
|
| Proceeds from investments, net |
(22)
|
0
|
(223)
|
0
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
1
|
1
|
2
|
(16)
|
| Net amortization/accretion of discount/premium on investments |
(1)
|
(3)
|
(2)
|
(2)
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
0
|
0
|
|
0
|
| Transfers in from the Mergers |
|
|
0
|
20,671
|
| Fair Value, End of Period |
42,568
|
36,755
|
42,568
|
36,755
|
| Specialty Finance | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
0
|
0
|
0
|
0
|
| Specialty Finance | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
1
|
1
|
2
|
(16)
|
| Preferred |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
951,696
|
1,015,942
|
1,072,481
|
686,858
|
| Purchases of investments, net |
0
|
13,061
|
58,989
|
44,622
|
| Payment-in-kind |
11,393
|
12,150
|
49,058
|
45,308
|
| Proceeds from investments, net |
0
|
(8,568)
|
(58,354)
|
(20,147)
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
13,388
|
63,880
|
(133,570)
|
76,867
|
| Net amortization/accretion of discount/premium on investments |
259
|
767
|
1,000
|
1,976
|
| Transfers between investment types |
|
(759)
|
|
(759)
|
| Transfers into (out of) Level 3 |
0
|
0
|
|
0
|
| Transfers in from the Mergers |
|
|
0
|
261,633
|
| Fair Value, End of Period |
990,315
|
1,096,622
|
990,315
|
1,096,622
|
| Preferred | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
0
|
149
|
(10,549)
|
264
|
| Preferred | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
26,967
|
63,880
|
(122,310)
|
76,867
|
| Common |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
455,042
|
556,568
|
684,030
|
468,725
|
| Purchases of investments, net |
17,201
|
9,992
|
51,353
|
21,318
|
| Payment-in-kind |
0
|
0
|
0
|
0
|
| Proceeds from investments, net |
(9,909)
|
(4,695)
|
(174,954)
|
(5,527)
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
21,150
|
32,916
|
(32,858)
|
47,998
|
| Net amortization/accretion of discount/premium on investments |
0
|
0
|
0
|
0
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
0
|
0
|
|
(3,092)
|
| Transfers in from the Mergers |
|
|
0
|
65,526
|
| Fair Value, End of Period |
490,196
|
595,718
|
490,196
|
595,718
|
| Common | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
6,978
|
(2,306)
|
119,055
|
(2,306)
|
| Common | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
20,884
|
36,159
|
(189,288)
|
51,074
|
| Specialty Finance |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
169,280
|
193,445
|
215,864
|
69,836
|
| Purchases of investments, net |
2,711
|
9,500
|
4,749
|
25,214
|
| Payment-in-kind |
0
|
0
|
0
|
0
|
| Proceeds from investments, net |
0
|
0
|
(47,722)
|
13,310
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
(1,222)
|
3,692
|
(2,122)
|
6,895
|
| Net amortization/accretion of discount/premium on investments |
0
|
0
|
0
|
0
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
0
|
0
|
|
0
|
| Transfers in from the Mergers |
|
|
0
|
91,382
|
| Fair Value, End of Period |
170,769
|
206,637
|
170,769
|
206,637
|
| Specialty Finance | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
0
|
0
|
0
|
0
|
| Specialty Finance | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
(1,222)
|
3,692
|
(2,122)
|
6,895
|
| Total |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
13,682,085
|
12,076,329
|
13,590,644
|
6,074,522
|
| Purchases of investments, net |
325,988
|
599,766
|
2,061,669
|
1,784,984
|
| Payment-in-kind |
37,121
|
43,614
|
120,163
|
119,899
|
| Proceeds from investments, net |
(258,172)
|
(584,569)
|
(1,508,486)
|
(1,130,252)
|
| Net amortization/accretion of discount/premium on investments |
11,616
|
14,811
|
37,589
|
38,929
|
| Transfers between investment types |
|
0
|
|
0
|
| Transfers into (out of) Level 3 |
(50,274)
|
612
|
|
(3,092)
|
| Transfers in from the Mergers |
|
|
(14,297)
|
5,200,244
|
| Fair Value, End of Period |
13,845,101
|
12,252,338
|
13,845,101
|
12,252,338
|
| Total | Income Statement Location [Axis]: us-gaap:RealizedInvestmentGainsLosses |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
6,984
|
1,644
|
95,402
|
(6,826)
|
| Total | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionOperatingAfterTax |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net change in unrealized gain (loss) / Net realized gains (losses) |
$ 89,753
|
$ 100,131
|
$ (537,583)
|
$ 173,930
|