v3.26.1
Debt - Additional Information (Details)
$ in Thousands
 1 Months Ended 6 Months Ended
Feb. 28, 2026
USD ($)
Jun. 30, 2026
USD ($)
counterparty
loan
day
Mar. 31, 2026
USD ($)
Feb. 19, 2026
USD ($)
loan
Dec. 31, 2025
USD ($)
counterparty
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Jan. 27, 2022
USD ($)
Debt Instrument [Line Items]                  
Unpaid Principal Balance   $ 2,899,771     $ 2,679,909        
Principal amount   2,756,870     2,476,490        
Current expected credit loss reserve   98,658 $ 85,316   87,401 $ 136,567 $ 155,365 $ 165,932  
Balance   2,756,870              
Variable rate                  
Debt Instrument [Line Items]                  
Unpaid Principal Balance   2,841,175     2,595,234        
Securitized loans | Variable rate                  
Debt Instrument [Line Items]                  
Unpaid Principal Balance   1,630,000     $ 1,172,999        
Investment grade notes | BRSP 2026-FL3                  
Debt Instrument [Line Items]                  
Proceeds from sale of securitization trust $ 955,000                
Sale of notes $ 833,200                
Ramp-up acquisition period 6 months                
Proceeds from sale of investments $ 98,300                
Reinvestment feature period 30 months                
Balance   $ 955,000              
Advance rate   87.30%              
Number of loans (in loans) | loan   32              
Investment grade notes | BRSP 2024-FL2                  
Debt Instrument [Line Items]                  
Proceeds from sale of securitization trust   $ 675,000              
Sale of notes   583,900              
Balance   $ 675,000              
Advance rate   86.50%              
Number of loans (in loans) | loan   27              
Reinvestment period   2 years              
Investment grade notes | BRSP 2021-FL 1                  
Debt Instrument [Line Items]                  
Balance       $ 440,800          
Number of loans (in loans) | loan       17          
Master repurchase facilities                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   $ 2,400,000              
Bank 1 | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Number of counterparties holding collateral that exceeds amounts borrowed by more than 10% | counterparty   3     3        
Bank 2 | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Number of counterparties holding collateral that exceeds amounts borrowed by more than 10% | counterparty         3        
Bank 3 | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Number of counterparties holding collateral that exceeds amounts borrowed by more than 10% | counterparty   3     3        
Bank 5 | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Number of counterparties holding collateral that exceeds amounts borrowed by more than 10% | counterparty   3              
Credit facilities                  
Debt Instrument [Line Items]                  
Principal amount   $ 926,225     $ 1,078,098        
Balance   926,225              
Credit facilities | Bank 1                  
Debt Instrument [Line Items]                  
Balance   262,800     216,400        
Credit facilities | Bank 2                  
Debt Instrument [Line Items]                  
Balance         100,000        
Credit facilities | Bank 3                  
Debt Instrument [Line Items]                  
Balance   92,900     122,000        
Credit facilities | Bank 5                  
Debt Instrument [Line Items]                  
Balance   93,000              
Credit facilities | Revolving credit facility | Credit agreement                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   120,000              
Borrowing capacity, increase to maximum available principal amount                 $ 180,000
Maximum amount that can be drawn   $ 120,000              
Maximum amount of base value available for borrowing   50.00%              
Tangible net worth   $ 900,000              
Percentage of net cash proceeds from offering   0.70              
Number of days to receive receipt | day   90              
EBITDA plus lease expenses to fixed charges   1.40              
Minimum interest coverage ratio   3.00              
Maximum leverage ratio   0.80              
Credit facilities | Revolving credit facility | Credit agreement | Option one                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   2.25%              
Credit facilities | Revolving credit facility | Credit agreement | Option two                  
Debt Instrument [Line Items]                  
Margin on basis spread on variable rate   0.0125              
Credit facilities | Revolving credit facility | Credit agreement | Option two | Federal funds rate                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   0.50%              
Credit facilities | Revolving credit facility | Credit agreement | Option two | Secured Overnight Financing Rate (SOFR)                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   1.00%              
Credit facilities | Master repurchase facilities                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   $ 2,350,000              
Principal amount   856,225     1,078,098        
Credit facilities | Master repurchase facilities | Asset Pledged as Collateral                  
Debt Instrument [Line Items]                  
Current expected credit loss reserve   1,400,000     1,500,000        
Credit facilities | Master repurchase facilities | Bank 1                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   $ 600,000              
Interest rate margin (in percentage)   2.26%              
Principal amount   $ 309,227     433,642        
Credit facilities | Master repurchase facilities | Bank 2                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   600,000              
Principal amount   0     135,550        
Credit facilities | Master repurchase facilities | Bank 3                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   $ 500,000              
Borrowing capacity, increase to maximum available principal amount         500,000        
Interest rate margin (in percentage)   1.74%              
Principal amount   $ 230,839     427,899        
Credit facilities | Master repurchase facilities | Bank 5                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   $ 250,000              
Interest rate margin (in percentage)   2.00%              
Principal amount   $ 141,016     0        
Letters of Credit | Revolving credit facility | Credit agreement                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity   25,000              
Securitization Bonds Payable, Net                  
Debt Instrument [Line Items]                  
Principal amount   1,417,112     982,090        
Balance   $ 1,417,112              
Securitization Bonds Payable, Net | Asset Pledged as Collateral                  
Debt Instrument [Line Items]                  
Current expected credit loss reserve         1,200,000        
Securitization Bonds Payable, Net | Investment grade notes | BRSP 2026-FL3                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   1.69%              
Principal amount   $ 833,237     0        
Securitization Bonds Payable, Net | Investment grade notes | BRSP 2024-FL2                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   2.47%              
Principal amount   $ 583,875     583,875        
Securitization Bonds Payable, Net | Investment grade notes | BRSP 2021-FL 1                  
Debt Instrument [Line Items]                  
Principal amount   $ 0     $ 398,215        
Debt instrument, repurchase amount       $ 310,700          
Minimum | Credit facilities                  
Debt Instrument [Line Items]                  
Initial debt term (in years)   1 year              
Minimum | Credit facilities | Revolving credit facility | Credit agreement                  
Debt Instrument [Line Items]                  
Unused amount, commitment fee percentage   0.25%              
Minimum | Credit facilities | Master repurchase facilities | Bank 2                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   1.30%              
Minimum | Securitization Bonds Payable, Net | Investment grade notes | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Initial debt term (in years)   2 years              
Maximum | Credit facilities                  
Debt Instrument [Line Items]                  
Initial debt term (in years)   5 years              
Maximum | Credit facilities | Revolving credit facility | Credit agreement                  
Debt Instrument [Line Items]                  
Unused amount, commitment fee percentage   0.35%              
Maximum | Credit facilities | Master repurchase facilities | Bank 2                  
Debt Instrument [Line Items]                  
Interest rate margin (in percentage)   2.75%              
Maximum | Securitization Bonds Payable, Net | Investment grade notes | CLNC 2019-FL1                  
Debt Instrument [Line Items]                  
Initial debt term (in years)   3 years