Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Schedule of Mortgage Loans by Property Type and Geographic Distribution (Parenthetical) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
General allowance for credit loss liability on unfunded \| $	$ 5.8
Germany
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	7.90%
Italy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	2.20%
Sweden
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	3.00%
Netherlands
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	0.30%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	0.40%
Northeast
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	3.50%
Southwest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	4.20%
Mid-Atlantic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	1.70%
Residential-for-Sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	2.20%
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	11.40%
Senior Housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	7.70%
Student Housing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	5.00%
Pubs
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	2.50%
Urban Predevelopment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Portfolio	2.60%