Fair Value of Financial Instruments - Schedule of Changes in the Fair Value of Investments (Details) - Level 3 - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
| Total |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
$ 13,947,677
|
$ 16,120,811
|
$ 15,572,144
|
$ 12,567,261
|
| Purchases of investments, net |
637,348
|
790,018
|
1,517,124
|
2,328,994
|
| Payment-in-kind |
35,787
|
43,440
|
120,754
|
150,491
|
| Proceeds from investments, net |
(611,452)
|
(574,800)
|
(2,909,912)
|
(2,719,251)
|
| Net amortization/accretion of discount/premium on investments |
16,010
|
22,269
|
48,998
|
79,832
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
(1,300)
|
|
(23,011)
|
(22,493)
|
| Transfers in from the OBDE Mergers |
|
|
|
3,997,087
|
| Fair value, end of period |
14,019,965
|
16,325,819
|
14,019,965
|
16,325,819
|
| 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) / realized gains (losses) |
(15,625)
|
1,468
|
(126,770)
|
(85,591)
|
| 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) / realized gains (losses) |
11,520
|
(77,387)
|
(179,362)
|
29,489
|
| First-Lien Senior Secured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
10,893,570
|
12,598,969
|
12,009,907
|
9,796,885
|
| Purchases of investments, net |
589,456
|
699,184
|
1,391,075
|
1,901,024
|
| Payment-in-kind |
14,176
|
14,690
|
46,434
|
55,351
|
| Proceeds from investments, net |
(552,533)
|
(561,658)
|
(2,370,327)
|
(2,444,990)
|
| Net amortization/accretion of discount/premium on investments |
14,765
|
20,511
|
41,644
|
71,638
|
| Transfers between investment types |
0
|
|
(158)
|
|
| Transfers into (out of) Level 3 |
(1,708)
|
|
(1,332)
|
(29,148)
|
| Transfers in from the OBDE Mergers |
|
|
|
3,450,900
|
| Fair value, end of period |
10,949,467
|
12,714,640
|
10,949,467
|
12,714,640
|
| 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) / realized gains (losses) |
(19,376)
|
1,105
|
(77,636)
|
(5,440)
|
| 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) / realized gains (losses) |
11,117
|
(58,161)
|
(90,140)
|
(81,580)
|
| Second-Lien Senior Secured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
674,223
|
863,667
|
801,281
|
660,060
|
| Purchases of investments, net |
0
|
0
|
0
|
141,010
|
| Payment-in-kind |
2,139
|
3,330
|
6,186
|
18,833
|
| Proceeds from investments, net |
(16,502)
|
0
|
(58,176)
|
(129,185)
|
| Net amortization/accretion of discount/premium on investments |
781
|
1,078
|
2,681
|
5,564
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
(40,463)
|
|
0
|
9,746
|
| Transfers in from the OBDE Mergers |
|
|
|
177,535
|
| Fair value, end of period |
623,238
|
835,770
|
623,238
|
835,770
|
| 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) / realized gains (losses) |
235
|
0
|
(8,269)
|
(102,791)
|
| 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) / realized gains (losses) |
2,825
|
(32,305)
|
(120,465)
|
54,998
|
| Unsecured |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
377,224
|
374,693
|
399,962
|
301,956
|
| Purchases of investments, net |
0
|
4,707
|
0
|
4,708
|
| Payment-in-kind |
13,664
|
12,840
|
35,517
|
36,309
|
| Proceeds from investments, net |
0
|
0
|
(41,400)
|
(33,743)
|
| Net amortization/accretion of discount/premium on investments |
107
|
131
|
304
|
759
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
0
|
|
0
|
0
|
| Transfers in from the OBDE Mergers |
|
|
|
66,164
|
| Fair value, end of period |
389,154
|
391,717
|
389,154
|
391,717
|
| 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) / realized gains (losses) |
0
|
0
|
2,471
|
(1,212)
|
| 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) / realized gains (losses) |
(1,841)
|
(654)
|
(7,700)
|
16,776
|
| Specialty Finance |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
171,254
|
132,173
|
157,297
|
90,735
|
| Purchases of investments, net |
7,188
|
20,418
|
19,076
|
46,010
|
| Payment-in-kind |
617
|
2,610
|
3,530
|
3,354
|
| Proceeds from investments, net |
(95)
|
0
|
(939)
|
0
|
| Net amortization/accretion of discount/premium on investments |
12
|
18
|
35
|
31
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
0
|
|
0
|
0
|
| Transfers in from the OBDE Mergers |
|
|
|
14,779
|
| Fair value, end of period |
178,964
|
155,201
|
178,964
|
155,201
|
| 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) / 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) / realized gains (losses) |
(12)
|
(18)
|
(35)
|
292
|
| Preferred |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
262,536
|
553,787
|
568,977
|
366,973
|
| Purchases of investments, net |
0
|
12,465
|
976
|
59,397
|
| Payment-in-kind |
4,895
|
9,697
|
28,227
|
35,849
|
| Proceeds from investments, net |
0
|
(2,448)
|
(292,441)
|
(17,807)
|
| Net amortization/accretion of discount/premium on investments |
405
|
531
|
4,394
|
1,840
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
0
|
|
0
|
0
|
| Transfers in from the OBDE Mergers |
|
|
|
128,882
|
| Fair value, end of period |
275,703
|
565,961
|
275,703
|
565,961
|
| 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) / realized gains (losses) |
0
|
24
|
(20,027)
|
176
|
| 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) / realized gains (losses) |
7,867
|
(8,095)
|
(14,403)
|
(9,349)
|
| Common |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
556,928
|
564,845
|
520,542
|
550,886
|
| Purchases of investments, net |
8,133
|
12,373
|
24,036
|
16,760
|
| Payment-in-kind |
296
|
273
|
860
|
795
|
| Proceeds from investments, net |
(5,105)
|
(4,694)
|
(6,520)
|
(82,080)
|
| Net amortization/accretion of discount/premium on investments |
(60)
|
0
|
(60)
|
0
|
| Transfers between investment types |
0
|
|
158
|
|
| Transfers into (out of) Level 3 |
0
|
|
(21,679)
|
(3,091)
|
| Transfers in from the OBDE Mergers |
|
|
|
83,590
|
| Fair value, end of period |
561,447
|
584,217
|
561,447
|
584,217
|
| 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) / realized gains (losses) |
3,516
|
339
|
(23,309)
|
22,558
|
| 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) / realized gains (losses) |
(2,261)
|
11,081
|
67,419
|
(5,201)
|
| Specialty Finance |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
1,011,942
|
1,032,677
|
1,114,178
|
799,766
|
| Purchases of investments, net |
32,571
|
40,871
|
81,961
|
160,085
|
| Payment-in-kind |
0
|
0
|
0
|
0
|
| Proceeds from investments, net |
(37,217)
|
(6,000)
|
(140,109)
|
(11,446)
|
| Net amortization/accretion of discount/premium on investments |
0
|
0
|
0
|
0
|
| Transfers between investment types |
0
|
|
0
|
|
| Transfers into (out of) Level 3 |
40,871
|
|
0
|
0
|
| Transfers in from the OBDE Mergers |
|
|
|
75,237
|
| Fair value, end of period |
1,041,992
|
1,078,313
|
1,041,992
|
1,078,313
|
| 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) / realized gains (losses) |
0
|
0
|
0
|
1,118
|
| 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) / realized gains (losses) |
$ (6,175)
|
$ 10,765
|
$ (14,038)
|
$ 53,553
|