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Debt Obligations - Collateralized Loan Obligations (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
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Dec. 31, 2022 USD ($) loan property | Dec. 31, 2021 USD ($) subsidiary tranche | Dec. 31, 2024 USD ($) loan | Dec. 31, 2023 USD ($) loan | Dec. 31, 2022 USD ($) tranche subsidiary | Dec. 31, 2021 USD ($) tranche subsidiary
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, Carrying Value |  |  | $ 4,622,489 | $ 6,935,010 |  |
Debt, Wtd. Avg. Rate |  |  | 6.86% | 7.67% |  |
Credit and repurchase facilities, principal/notional amount |  |  | $ 3,568,361 | $ 3,242,939 |  |
Proceeds from issuance of securitized debt |  |  | 0 | 0 | $ 2,762,502 |
Payoffs and paydowns of collateralized loan obligations |  |  | 2,324,269 | 929,782 | $ 801,141 |
Secured Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Leverage (as a percent) | 75.00% |  |  |  | 75.00% |
Number of floating rate loans sold | loan | 11 |  |  |  |  |
Notional amount of secured floating rate notes | $ 315,800 |  |  |  | $ 315,800 |
Secured Debt | Multifamily |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of mortgage liens that were qualified for loan | property | 21 |  |  |  |  |
Secured Debt | Secured Overnight Financing Rate (SOFR) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt interest rate, excluding fees and costs | 2.00% |  |  |  |  |
Collateralized loan obligations |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  |  | 4,581,374 | 6,741,006 |  |
Debt, Carrying Value |  |  | $ 4,572,055 | $ 6,721,356 |  |
Debt, Wtd. Avg. Rate |  |  | 6.35% | 7.14% |  |
Collateral, UPB |  |  | $ 5,806,502 | $ 7,558,887 |  |
Collateral, Carrying Value |  |  | 5,803,208 | 7,540,741 |  |
Collateral, Restricted Cash |  |  | 88,000 | 529,812 |  |
Deferred financing fees |  |  | $ 9,500 | $ 21,300 |  |
Number of loans | loan |  |  | 46 | 12 |  |
Collateral at risk |  |  | $ 1,600,000 | $ 308,300 |  |
CLO 19 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value | $ 872,800 |  | 753,987 | 872,812 | $ 872,800 |
Debt, Carrying Value |  |  | $ 751,364 | $ 868,359 |  |
Debt, Wtd. Avg. Rate |  |  | 7.02% | 7.84% |  |
Collateral, UPB |  |  | $ 912,935 | $ 1,031,772 |  |
Collateral, Carrying Value |  |  | 912,392 | 1,028,669 |  |
Collateral, Restricted Cash |  |  | 0 | 4,527 |  |
Weighted average note rate including certain fees and costs (as a percent) | 2.36% |  |  |  | 2.36% |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  |  |  |  | $ 73,100 |
Number of tranches of CLO notes issued | tranche |  |  |  |  | 9 |
Value of the tranches issued | $ 1,050,000 |  |  |  | $ 1,050,000 |
Credit and repurchase facilities, principal/notional amount | 177,200 |  |  |  | 177,200 |
Value of portfolio loans and cash as collateral | 976,900 |  |  |  | $ 976,900 |
Replacement period |  |  |  |  | 2 years |
Maximum period to acquire additional loan obligations |  |  |  |  | 180 days |
Face value of loan obligations will be owned by the issuer | $ 1,050,000 |  |  |  | $ 1,050,000 |
Leverage (as a percent) | 83.00% |  |  |  | 83.00% |
Number of newly-formed wholly-owned subsidiaries | subsidiary |  |  |  |  | 1 |
CLO 18 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value | $ 1,650,000 |  | 1,335,647 | 1,652,812 | $ 1,650,000 |
Debt, Carrying Value |  |  | $ 1,332,950 | $ 1,647,885 |  |
Debt, Wtd. Avg. Rate |  |  | 6.47% | 7.29% |  |
Collateral, UPB |  |  | $ 1,684,765 | $ 1,784,921 |  |
Collateral, Carrying Value |  |  | 1,684,285 | 1,780,930 |  |
Collateral, Restricted Cash |  |  | 37,090 | 244,629 |  |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  |  |  |  | $ 347,300 |
Number of tranches of CLO notes issued | tranche |  |  |  |  | 8 |
Value of portfolio loans and cash as collateral | 1,700,000 |  |  |  | $ 1,700,000 |
Replacement period |  |  |  |  | 2 years 6 months |
Maximum period to acquire additional loan obligations |  |  |  |  | 180 days |
Face value of loan obligations will be owned by the issuer | $ 2,050,000 |  |  |  | $ 2,050,000 |
Leverage (as a percent) | 81.00% |  |  |  | 81.00% |
Number of newly-formed wholly-owned subsidiaries | subsidiary |  |  |  |  | 2 |
Proceeds from issuance of securitized debt |  |  |  |  | $ 1,860,000 |
Notional amount of residual interest retained | $ 397,200 |  |  |  | $ 397,200 |
CLO 18 | One-month LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted average note rate including certain fees and costs (as a percent) | 1.81% |  |  |  | 1.81% |
CLO 18 | External Credit Rating, Noninvestment Grade |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, Carrying Value | $ 210,100 |  |  |  | $ 210,100 |
Notional amount of residual interest retained | 210,100 |  |  |  | 210,100 |
CLO 17 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  | $ 1,710,000 | 1,482,657 | 1,714,125 |  | $ 1,710,000
Debt, Carrying Value |  |  | $ 1,480,495 | $ 1,709,800 |  |
Debt, Wtd. Avg. Rate |  |  | 6.15% | 7.14% |  |
Collateral, UPB |  |  | $ 1,811,391 | $ 1,870,388 |  |
Collateral, Carrying Value |  |  | 1,810,463 | 1,865,878 |  |
Collateral, Restricted Cash |  |  | 50,910 | 203,938 |  |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  | $ 315,000 |  |  |  |
Number of tranches of CLO notes issued | tranche |  | 8 |  |  |  |
Value of the tranches issued |  | $ 1,910,000 |  |  |  | 1,910,000
Credit and repurchase facilities, principal/notional amount |  | 194,300 |  |  |  | 194,300
Value of portfolio loans and cash as collateral |  | $ 1,790,000 |  |  |  | $ 1,790,000
Replacement period |  |  |  |  |  | 2 years 6 months
Maximum period to acquire additional loan obligations |  | 180 days |  |  |  |
Face value of loan obligations will be owned by the issuer |  | $ 2,100,000 |  |  |  | $ 2,100,000
Leverage (as a percent) |  | 82.00% |  |  |  | 82.00%
Number of newly-formed wholly-owned subsidiaries | subsidiary |  | 2 |  |  |  |
Notional amount of residual interest retained |  | $ 385,900 |  |  |  | $ 385,900
CLO 17 | One-month LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted average note rate including certain fees and costs (as a percent) |  | 1.68% |  |  |  | 1.68%
CLO 17 | External Credit Rating, Noninvestment Grade |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notional amount of residual interest retained |  | $ 194,300 |  |  |  | $ 194,300
CLO 16 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  | 1,240,000 | 682,845 | 1,237,500 |  | 1,240,000
Debt, Carrying Value |  |  | $ 681,008 | $ 1,233,769 |  |
Debt, Wtd. Avg. Rate |  |  | 5.93% | 6.76% |  |
Collateral, UPB |  |  | $ 944,660 | $ 1,456,872 |  |
Collateral, Carrying Value |  |  | 943,542 | 1,453,297 |  |
Collateral, Restricted Cash |  |  | 0 | 847 |  |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  |  |  |  |  | $ 313,000
Number of tranches of CLO notes issued | tranche |  |  |  |  |  | 8
Value of the tranches issued |  | 1,370,000 |  |  |  | $ 1,370,000
Credit and repurchase facilities, principal/notional amount |  | 135,000 |  |  |  | 135,000
Value of portfolio loans and cash as collateral |  | 1,190,000 |  |  |  | $ 1,190,000
Replacement period |  |  |  |  |  | 2 years 6 months
Maximum period to acquire additional loan obligations |  |  |  |  |  | 180 days
Face value of loan obligations will be owned by the issuer |  | $ 1,500,000 |  |  |  | $ 1,500,000
Leverage (as a percent) |  | 83.00% |  |  |  | 83.00%
Number of newly-formed wholly-owned subsidiaries | subsidiary |  |  |  |  |  | 2
Notional amount of residual interest retained |  | $ 262,500 |  |  |  | $ 262,500
CLO 16 | One-month LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, Wtd. Avg. Rate |  | 1.31% |  |  |  | 1.31%
CLO 16 | External Credit Rating, Noninvestment Grade |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notional amount of residual interest retained |  | $ 135,000 |  |  |  | $ 135,000
CLO 14 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  | 655,500 | 326,238 | 589,345 |  | 655,500
Debt, Carrying Value |  |  | $ 326,238 | $ 588,176 |  |
Debt, Wtd. Avg. Rate |  |  | 6.11% | 6.82% |  |
Collateral, UPB |  |  | $ 452,751 | $ 680,814 |  |
Collateral, Carrying Value |  |  | 452,526 | 679,469 |  |
Collateral, Restricted Cash |  |  | 0 | 33,271 |  |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  |  |  |  |  | $ 149,800
Number of tranches of CLO notes issued | tranche |  |  |  |  |  | 8
Value of the tranches issued |  | 724,200 |  |  |  | $ 724,200
Credit and repurchase facilities, principal/notional amount |  | 68,700 |  |  |  | 68,700
Value of portfolio loans and cash as collateral |  | 635,200 |  |  |  | $ 635,200
Replacement period |  |  |  |  |  | 2 years 6 months
Maximum period to acquire additional loan obligations |  |  |  |  |  | 180 days
Face value of loan obligations will be owned by the issuer |  | $ 785,000 |  |  |  | $ 785,000
Leverage (as a percent) |  | 84.00% |  |  |  | 84.00%
Number of newly-formed wholly-owned subsidiaries | subsidiary |  |  |  |  |  | 2
Notional amount of residual interest retained |  | $ 129,500 |  |  |  | $ 129,500
CLO 14 | One-month LIBOR |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Weighted average note rate including certain fees and costs (as a percent) |  | 1.33% |  |  |  | 1.33%
CLO 14 | External Credit Rating, Noninvestment Grade |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Notional amount of residual interest retained |  | $ 68,700 |  |  |  | $ 68,700
CLO 15 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  | $ 674,400 |  | 674,412 |  | $ 674,400
Debt, Carrying Value |  |  |  | $ 673,367 |  |
Debt, Wtd. Avg. Rate |  |  |  | 6.82% |  |
Collateral, UPB |  |  |  | $ 734,120 |  |
Collateral, Carrying Value |  |  |  | 732,498 |  |
Collateral, Restricted Cash |  |  |  | 42,600 |  |
CLO 13 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Payoffs and paydowns of collateralized loan obligations |  |  |  | 1,500 |  |
Q Series securitization |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  |  | 50,641 | 215,278 |  |
Debt, Carrying Value |  |  | $ 50,434 | $ 213,654 |  |
Debt, Wtd. Avg. Rate |  |  | 6.49% | 7.38% |  |
Collateral, UPB |  |  | $ 94,940 | $ 287,038 |  |
Collateral, Carrying Value |  |  | 94,895 | 286,053 |  |
Collateral, Restricted Cash |  |  | $ 0 | $ 0 |  |
Weighted average note rate including certain fees and costs (as a percent) |  |  | 7.46% | 7.99% |  |
Repayments of debt |  |  | $ 58,100 |  |  |
Total securitized debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value |  |  | 4,632,015 | $ 6,956,284 |  |
Debt, Carrying Value |  |  | $ 4,622,489 | $ 6,935,010 |  |
Debt, Wtd. Avg. Rate |  |  | 6.35% | 7.15% |  |
Collateral, UPB |  |  | $ 5,901,442 | $ 7,845,925 |  |
Collateral, Carrying Value |  |  | 5,898,103 | 7,826,794 |  |
Collateral, Restricted Cash |  |  | $ 88,000 | $ 529,812 |  |
Weighted average note rate including certain fees and costs (as a percent) |  |  | 6.59% | 7.37% |  |
CLO VII |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from issuance of collateralized loan obligations for acquiring additional loan obligations |  |  | $ 43,400 | $ 63,900 |  |
Subordinate Certificates | Secured Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt, face value | 236,900 |  |  |  | 236,900 |
Debt, Carrying Value | $ 79,000 |  |  |  | $ 79,000 |
Collateralized Loan Obligations Fourteen, Sixteen, And Nineteen |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of debt |  |  | $ 896,500 |  |  |

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- Definition Represents the face value of collateral in default, as defined by the CDO indenture, as well as assets deemed to be a credit risk. Credit risk assets are reported by each of the CDOs and are generally defined as the one that, in the CDO collateral manager's reasonable business judgment, has a significant risk of declining in credit quality or, with a passage of time, becoming a defaulted asset. + References No definition available. + Details
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- Definition Represents the replacement period of financing that allows the principal proceeds and sale proceeds (if any) of the loan obligations to be reinvested in qualifying replacement loan obligations. + References No definition available. + Details
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