Fair Value of Financial Instruments - Schedule of Significant Unobservable Inputs (Details) - Valuation Technique, Discounted cash flow	Mar. 31, 2026 USD ($) yr	Dec. 31, 2025 USD ($) yr
Collateralized loan obligations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 1,100,000,000	$ 1,100,000,000
Commercial real estate loan investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	4,093,348,000	3,558,722,000
Commercial real estate loan investments \| Instruments Other Than Collateralized Loan Obligations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	4,000,000,000.0	3,500,000,000
Commercial real estate loan investments \| Collateralized loan obligations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 80,700,000	$ 80,700,000
Weighted Average Life (years) \| Long-Term Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Repurchase agreements, measurement input \| yr	0.22	0.28
Weighted Average Life (years) \| Commercial real estate loan investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commercial loans, measurement input \| yr	0.25	0.31
Weighted Average \| Discount rate \| Long-Term Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Repurchase agreements, measurement input	0.0518	0.0529
Weighted Average \| Discount rate \| Commercial real estate loan investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commercial loans, measurement input	0.0623	0.0636
Minimum \| Discount rate \| Long-Term Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Repurchase agreements, measurement input	0.0413	0.0412
Minimum \| Discount rate \| Commercial real estate loan investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commercial loans, measurement input	0.0515	0.0514
Maximum \| Discount rate \| Long-Term Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Repurchase agreements, measurement input	0.0592	0.0604
Maximum \| Discount rate \| Commercial real estate loan investments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commercial loans, measurement input	0.1132	0.1144