Investments in Real Estate Debt - Schedule of Investments in Real Estate Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	8.00%	8.20%
Face Amount	$ 4,789,168	$ 5,541,956
Cost Basis	4,732,042	5,521,236
Fair Value	$ 4,637,713	$ 5,279,928
Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	8.10%	8.30%
Face Amount	$ 3,729,149	$ 4,216,203
Cost Basis	3,708,916	4,200,192
Fair Value	$ 3,501,268	$ 3,922,404
CMBS | Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	4.30%	4.20%
Face Amount	$ 3,570,539	$ 3,970,222
Cost Basis	3,553,329	3,956,637
Fair Value	$ 3,364,815	$ 3,728,985
RMBS | Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	4.20%	4.20%
Face Amount	$ 101,931	$ 190,626
Cost Basis	99,584	187,552
Fair Value	$ 81,296	$ 141,767
Corporate bonds | Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	4.90%	4.90%
Face Amount	$ 56,679	$ 55,355
Cost Basis	56,003	56,003
Fair Value	$ 55,157	$ 51,652
Private commercial real estate loans | Commercial real estate loans
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	4.40%	4.60%
Face Amount	$ 860,693	$ 1,037,985
Cost Basis	823,800	1,044,460
Fair Value	$ 836,003	$ 1,032,821
Other Investments
Debt and Equity Securities, FV-NI [Line Items]
Weighted Average Coupon	5.70%	5.70%
Face Amount	$ 199,326	$ 287,768
Cost Basis	199,326	276,584
Fair Value	300,442	324,703
CMBS, interest only securities | Total real estate securities
Debt and Equity Securities, FV-NI [Line Items]
Face Amount	$ 1,300,000	$ 1,800,000