Fair Value Measurements - Schedule of Changes in Fair Value of Investments Measured Using Level 3 Inputs (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
| Investments |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
$ 74,801,874
|
$ 61,796,807
|
$ 75,023,423
|
$ 61,482,810
|
| Purchases of investments |
1,952,575
|
4,252,486
|
6,333,218
|
8,751,835
|
| Proceeds from principal repayments and sales of investments |
(3,155,929)
|
(1,074,464)
|
(6,906,703)
|
(5,283,801)
|
| Accretion of discount (amortization of premium) |
64,344
|
54,146
|
124,591
|
128,043
|
| Transfers into Level 3 |
278,571
|
69,747
|
80,000
|
46,319
|
| Transfers out of Level 3 |
(83,172)
|
(23,268)
|
(99,278)
|
(94,555)
|
| Fair value, end of period |
72,948,084
|
65,380,618
|
72,948,084
|
65,380,618
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
(881,986)
|
305,311
|
(1,534,421)
|
371,227
|
| Investments, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(19,835)
|
1,076
|
(28,027)
|
13,004
|
| Investments, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(890,344)
|
304,088
|
(1,579,140)
|
336,963
|
| First lien debt |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
69,646,881
|
57,423,521
|
68,786,055
|
57,154,971
|
| Purchases of investments |
1,805,300
|
3,877,956
|
5,942,026
|
8,072,012
|
| Proceeds from principal repayments and sales of investments |
(2,726,339)
|
(1,041,306)
|
(5,299,247)
|
(4,977,747)
|
| Accretion of discount (amortization of premium) |
62,974
|
52,701
|
121,502
|
124,771
|
| Transfers into Level 3 |
278,571
|
69,747
|
47,842
|
46,319
|
| Transfers out of Level 3 |
(83,172)
|
(23,268)
|
(99,278)
|
(94,555)
|
| Fair value, end of period |
68,127,653
|
60,594,620
|
68,127,653
|
60,594,620
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
(846,677)
|
235,548
|
(1,323,745)
|
297,439
|
| Debt Securities, First Lien, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(23,233)
|
917
|
(33,238)
|
(3,265)
|
| Debt Securities, First Lien, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(833,329)
|
234,352
|
(1,338,009)
|
272,114
|
| Second lien debt |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
2,430,811
|
2,258,941
|
2,479,259
|
2,088,319
|
| Purchases of investments |
36,154
|
117,751
|
59,058
|
296,948
|
| Proceeds from principal repayments and sales of investments |
(30,267)
|
(4,880)
|
(40,269)
|
(17,892)
|
| Accretion of discount (amortization of premium) |
1,294
|
1,346
|
2,718
|
2,623
|
| Transfers into Level 3 |
0
|
0
|
32,158
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair value, end of period |
2,429,066
|
2,409,541
|
2,429,066
|
2,409,541
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
(8,779)
|
36,383
|
(102,623)
|
39,542
|
| Debt Securities, Second Lien, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(849)
|
0
|
(893)
|
1
|
| Debt Securities, Second Lien, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(8,077)
|
36,383
|
(102,965)
|
39,542
|
| Unsecured debt |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
59,715
|
30,453
|
57,816
|
157,115
|
| Purchases of investments |
2,090
|
1,039
|
5,127
|
2,065
|
| Proceeds from principal repayments and sales of investments |
0
|
0
|
0
|
(129,371)
|
| Accretion of discount (amortization of premium) |
42
|
22
|
84
|
44
|
| Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair value, end of period |
60,216
|
30,743
|
60,216
|
30,743
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
(1,631)
|
(771)
|
(2,811)
|
(804)
|
| Debt Securities, Unsecured Debt, Net Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
0
|
0
|
0
|
0
|
| Debt Securities, Unsecured Debt, Net Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(1,631)
|
(771)
|
(2,811)
|
890
|
| Structured finance obligations - debt instruments |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
412,348
|
536,456
|
501,333
|
590,509
|
| Purchases of investments |
0
|
21,205
|
0
|
50,051
|
| Proceeds from principal repayments and sales of investments |
(210,582)
|
(10,043)
|
(275,077)
|
(85,364)
|
| Accretion of discount (amortization of premium) |
34
|
77
|
201
|
160
|
| Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair value, end of period |
210,320
|
550,910
|
210,320
|
550,910
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
5,519
|
3,083
|
(9,819)
|
(4,200)
|
| Structured Finance, Debt Instrument, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(5,424)
|
159
|
(5,452)
|
691
|
| Structured Finance, Debt Instruments, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
13,944
|
3,056
|
(10,685)
|
(5,137)
|
| Structured finance obligations - equity instruments |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
256,137
|
191,459
|
301,610
|
141,139
|
| Purchases of investments |
5,089
|
69,275
|
19,168
|
138,202
|
| Proceeds from principal repayments and sales of investments |
(8,825)
|
(5,504)
|
(25,160)
|
(20,804)
|
| Accretion of discount (amortization of premium) |
0
|
0
|
0
|
(8)
|
| Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair value, end of period |
263,118
|
257,376
|
263,118
|
257,376
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
11,117
|
2,146
|
(30,972)
|
(1,153)
|
| Structured Finance, Equity Instrument, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
(473)
|
0
|
(467)
|
0
|
| Structured Finance, Equity Instrument, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
11,190
|
2,146
|
(32,033)
|
(1,153)
|
| Equity and other |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Fair value, beginning of period |
1,995,982
|
1,355,977
|
2,897,350
|
1,350,757
|
| Purchases of investments |
103,942
|
165,260
|
307,839
|
192,557
|
| Proceeds from principal repayments and sales of investments |
(179,916)
|
(12,731)
|
(1,266,950)
|
(52,623)
|
| Accretion of discount (amortization of premium) |
0
|
0
|
86
|
453
|
| Transfers into Level 3 |
0
|
0
|
0
|
0
|
| Transfers out of Level 3 |
0
|
0
|
0
|
0
|
| Fair value, end of period |
1,857,711
|
1,537,428
|
1,857,711
|
1,537,428
|
| Net change in unrealized appreciation (depreciation) included in earnings related to financial instruments, included in net unrealized appreciation (depreciation) on the Consolidated Statements of Operations |
(41,535)
|
28,922
|
(64,451)
|
40,403
|
| Equity Securities, Realized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
10,144
|
0
|
12,023
|
15,577
|
| Equity Securities, Unrealized Gain (Loss) |
|
|
|
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |
|
|
|
|
| Net realized gain (loss) |
$ (72,441)
|
$ 28,922
|
$ (92,637)
|
$ 30,707
|