Investments in Real Estate Debt - Schedule of Credit Rating of 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%
A
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 35,301	$ 28,200
Fair Value	$ 33,309	$ 27,735
Percentage Based on Fair Value	1.00%	1.00%
BBB
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 786,787	$ 807,228
Fair Value	$ 778,306	$ 799,005
Percentage Based on Fair Value	15.00%	15.00%
BB
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 779,350	$ 797,219
Fair Value	$ 748,346	$ 759,361
Percentage Based on Fair Value	14.00%	14.00%
B
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 571,863	$ 576,629
Fair Value	$ 534,642	$ 523,784
Percentage Based on Fair Value	10.00%	9.00%
CCC and below
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 155,892	$ 143,548
Fair Value	$ 46,116	$ 38,704
Percentage Based on Fair Value	1.00%	1.00%
Private commercial real estate loans
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 968,526	$ 1,044,460
Fair Value	$ 969,615	$ 1,032,821
Percentage Based on Fair Value	19.00%	20.00%
Not Rated
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 2,090,769	$ 2,123,952
Fair Value	$ 2,084,635	$ 2,098,518
Percentage Based on Fair Value	40.00%	40.00%
Weighted average LTV at origination	55.00%
Not Rated | Industrial properties
Debt and Equity Securities, FV-NI [Line Items]
Weighted average LTV at origination	57.00%
Not Rated | Rental Housing Properties:
Debt and Equity Securities, FV-NI [Line Items]
Weighted average LTV at origination	41.00%