Investments in Real Estate Debt, at Fair Value - Schedule of Investments in Real Estate Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	7.10%	7.80%
Face Amount	$ 4,674,213	$ 4,334,589
Cost Basis	4,649,417	4,311,720
Fair Value	$ 4,460,338	$ 4,133,770
Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	6.90%	7.80%
Face Amount	$ 3,958,905	$ 3,450,585
Cost Basis	3,940,316	3,440,525
Fair Value	$ 3,742,321	$ 3,243,004
CMBS \| Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	3.50%	4.40%
Face Amount	$ 3,231,951	$ 3,301,112
Cost Basis	3,222,422	3,294,039
Fair Value	$ 3,050,799	$ 3,113,235
RMBS \| Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	6.00%	4.20%
Face Amount	$ 237,981	$ 94,799
Cost Basis	235,323	92,483
Fair Value	$ 215,118	$ 76,668
Corporate bonds \| Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	2.60%	4.90%
Face Amount	$ 488,973	$ 54,674
Cost Basis	482,571	54,003
Fair Value	$ 476,404	$ 53,101
Commercial real estate loans \| Commercial real estate loans
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	4.70%	4.60%
Face Amount	$ 617,876	$ 795,157
Cost Basis	611,669	782,348
Fair Value	618,043	794,147
Other investments
Debt and Equity Securities, FV-NI [Line Items]
Face Amount	97,432	88,847
Cost Basis	97,432	88,847
Fair Value	99,974	96,619
CMBS, interest only securities \| Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Face Amount	$ 44,500	$ 133,200