Investments in Real Estate Debt - Schedule of Collateral Type of Properties Securing Investments in Real Estate Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 5,388,488	$ 5,521,236
Fair Value	$ 5,194,969	$ 5,279,928
Percentage Based on Fair Value	100.00%	100.00%
Industrial
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 2,026,395	$ 1,972,592
Fair Value	$ 2,000,043	$ 1,940,709
Percentage Based on Fair Value	38.00%	37.00%
Rental Housing
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 1,811,091	$ 1,873,616
Fair Value	$ 1,821,010	$ 1,850,255
Percentage Based on Fair Value	35.00%	35.00%
Net Lease
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 858,504	$ 858,605
Fair Value	$ 860,079	$ 860,465
Percentage Based on Fair Value	17.00%	16.00%
Office
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 366,661	$ 379,257
Fair Value	$ 204,419	$ 209,882
Percentage Based on Fair Value	4.00%	4.00%
Hospitality
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 244,140	$ 332,623
Fair Value	$ 231,299	$ 322,052
Percentage Based on Fair Value	4.00%	6.00%
Other
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 52,529	$ 52,257
Fair Value	$ 50,610	$ 49,900
Percentage Based on Fair Value	1.00%	1.00%
Diversified
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 29,168	$ 52,286
Fair Value	$ 27,509	$ 46,665
Percentage Based on Fair Value	1.00%	1.00%