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Secured Debt Arrangements, Net - Summary of Outstanding Balances, Maximum and Average Balances of Borrowings (Details) - Line of Credit - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Line of Credit Facility [Line Items] |  |
Balance | $ 5,610,491 | $ 5,551,809
Collateral | 8,179,086 | 8,093,030
JPMorgan |  |
Line of Credit Facility [Line Items] |  |
Balance | 1,054,073 | 1,061,380
Collateral | 1,869,057 | 1,871,854
Maximum Month-End Balance | 1,063,261 | 1,324,226
Average Month-End Balance | 1,058,968 | 1,190,651
DB |  |
Line of Credit Facility [Line Items] |  |
Balance | 278,703 | 275,815
Collateral | 421,949 | 419,170
Maximum Month-End Balance | 278,703 | 385,818
Average Month-End Balance | 277,741 | 322,676
Goldman |  |
Line of Credit Facility [Line Items] |  |
Balance |  | 13,437
Collateral |  | 28,533
Maximum Month-End Balance |  | 70,249
Average Month-End Balance |  | 30,482
Goldman | USD |  |
Line of Credit Facility [Line Items] |  |
Balance | 11,605 |
Collateral | 25,242 |
Maximum Month-End Balance | 11,620 |
Average Month-End Balance | 11,612 |
Goldman | Fx contracts - GBP |  |
Line of Credit Facility [Line Items] |  |
Balance | 158,599 |
Collateral | 209,523 |
Maximum Month-End Balance | 159,403 |
Average Month-End Balance | 158,872 |
CS Facility |  |
Line of Credit Facility [Line Items] |  |
Balance | 751,207 | 669,302
Collateral | 1,098,342 | 933,085
Maximum Month-End Balance | 751,207 | 688,126
Average Month-End Balance | 676,229 | 667,794
HSBC Facility |  |
Line of Credit Facility [Line Items] |  |
Balance | 655,767 | 665,368
Collateral | 849,268 | 860,134
Maximum Month-End Balance | 658,434 | 667,430
Average Month-End Balance | 656,800 | 651,758
Barclays Facility |  |
Line of Credit Facility [Line Items] |  |
Balance | 99,817 | 107,929
Collateral | 124,107 | 129,439
Maximum Month-End Balance | 102,598 | 111,909
Average Month-End Balance | 101,671 | 110,729
MUFG Facility |  |
Line of Credit Facility [Line Items] |  |
Balance | 202,970 | 204,690
Collateral | 275,579 | 278,223
Maximum Month-End Balance | 203,999 | 206,362
Average Month-End Balance | 203,318 | 200,447
Churchill |  |
Line of Credit Facility [Line Items] |  |
Balance | 125,209 |
Collateral | 166,563 |
Maximum Month-End Balance | 126,080 |
Average Month-End Balance | 125,644 |
Santander Facility | USD |  |
Line of Credit Facility [Line Items] |  |
Balance | 67,500 | 67,500
Collateral | 99,736 | 99,648
Maximum Month-End Balance | 67,500 | 75,000
Average Month-End Balance | 67,500 | 68,125
Santander Facility | Fx contracts - EUR |  |
Line of Credit Facility [Line Items] |  |
Balance | 54,677 | 55,716
Collateral | 72,302 | 74,288
Maximum Month-End Balance | 54,677 | 55,716
Average Month-End Balance | 54,666 | 54,347
Barclays Securitization |  |
Line of Credit Facility [Line Items] |  |
Balance | 2,056,364 | 2,157,157
Collateral | 2,786,288 | 2,911,470
Maximum Month-End Balance | 2,146,965 | 2,157,157
Average Month-End Balance | 2,085,304 | 1,896,144
Revolving Credit Facility |  |
Line of Credit Facility [Line Items] |  |
Balance | 94,000 | 147,000
Collateral | 181,130 | 319,048
Maximum Month-End Balance | 150,000 | 147,000
Average Month-End Balance | $ 112,667 | 93,500
Churchill Facility | USD |  |
Line of Credit Facility [Line Items] |  |
Balance |  | 126,515
Collateral |  | 168,138
Maximum Month-End Balance |  | 130,000
Average Month-End Balance |  | $ 128,094

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