Real Estate and Other Investments - Mortgage Debt Joint Venture (Details)	9 Months Ended
Sep. 30, 2025 USD ($) property option state	Aug. 31, 2025 USD ($)
Real Estate
Number of states in which properties are located \| state	34
Corporate Joint Venture
Real Estate
Interest rate (as a percent)	5.40%
Principal balance	$ 1,456,625,000
Seaport Innovation LLC \| Corporate Joint Venture \| Massachusetts
Real Estate
Encumbered properties (property) \| property	1
Interest rate (as a percent)	5.60%
Principal balance	$ 1,000,000,000	$ 620,000,000
Liability limited amount	$ 100,000,000
The LSMD Fund REIT LLC \| Corporate Joint Venture
Real Estate
Encumbered properties (property) \| property	9
Number of states in which properties are located \| state	5
Interest rate (as a percent)	3.46%
Principal balance	$ 189,800,000
The LSMD Fund REIT LLC \| Corporate Joint Venture \| California
Real Estate
Encumbered properties (property) \| property	1
Interest rate (as a percent)	6.14%
Principal balance	$ 266,825,000
Number of extension options \| option	1
Extension term	1 year
Basis points per annum (as a percent)	1.90%
The LSMD Fund REIT LLC \| Corporate Joint Venture \| California \| Interest Rate Cap
Real Estate
Basis points per annum (as a percent)	5.74%

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