Investments in Real Estate Debt - Schedule of Credit Rating of Investments in Real Estate Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 4,732,042	$ 5,521,236
Fair Value	$ 4,637,713	$ 5,279,928
Percentage Based on Fair Value	100.00%	100.00%
A
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 818	$ 28,200
Fair Value	$ 740	$ 27,735
Percentage Based on Fair Value	0.00%	1.00%
BBB
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 810,753	$ 807,228
Fair Value	$ 803,973	$ 799,005
Percentage Based on Fair Value	17.00%	15.00%
BB
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 602,594	$ 797,219
Fair Value	$ 583,385	$ 759,361
Percentage Based on Fair Value	13.00%	14.00%
B
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 489,946	$ 576,629
Fair Value	$ 462,995	$ 523,784
Percentage Based on Fair Value	10.00%	9.00%
CCC and below
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 131,708	$ 143,548
Fair Value	$ 42,048	$ 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	$ 823,800	$ 1,044,460
Fair Value	$ 836,003	$ 1,032,821
Percentage Based on Fair Value	18.00%	20.00%
Not Rated
Debt and Equity Securities, FV-NI [Line Items]
Cost Basis	$ 1,872,423	$ 2,123,952
Fair Value	$ 1,908,569	$ 2,098,518
Percentage Based on Fair Value	41.00%	40.00%
Weighted average LTV at origination	53.00%
Not Rated | Industrial properties
Debt and Equity Securities, FV-NI [Line Items]
Weighted average LTV at origination	55.00%
Not Rated | Rental Housing Properties:
Debt and Equity Securities, FV-NI [Line Items]
Weighted average LTV at origination	43.00%