Investments in Real Estate Debt, at Fair Value - Schedule of Collateral Type of Properties Securing Investments in Real Estate Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 4,649,417	$ 4,311,720
Fair Value	$ 4,460,338	$ 4,133,770
Percentage Based on Fair Value	100.00%	100.00%
Rental Housing
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 1,496,340	$ 1,377,438
Fair Value	$ 1,478,417	$ 1,374,338
Percentage Based on Fair Value	33.00%	33.00%
Industrial
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 1,246,503	$ 1,580,056
Fair Value	$ 1,246,139	$ 1,571,783
Percentage Based on Fair Value	28.00%	38.00%
Diversified
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 508,876	$ 29,054
Fair Value	$ 507,556	$ 28,073
Percentage Based on Fair Value	11.00%	1.00%
Net Lease
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 489,748	$ 884,434
Fair Value	$ 487,884	$ 885,742
Percentage Based on Fair Value	11.00%	21.00%
Data Centers
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 296,040	$ 0
Fair Value	$ 294,919	$ 0
Percentage Based on Fair Value	7.00%	0.00%
Office
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 343,068	$ 349,362
Fair Value	$ 188,519	$ 192,799
Percentage Based on Fair Value	4.00%	5.00%
Hospitality
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 86,536	$ 67,048
Fair Value	$ 75,462	$ 56,730
Percentage Based on Fair Value	2.00%	1.00%
Other
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 182,306	$ 24,328
Fair Value	$ 181,442	$ 24,305
Percentage Based on Fair Value	4.00%	1.00%