v3.25.2
Assets and Liabilities Measured at Fair Value on a Recurring Basis - Schedule of net unrealized gains included in changes in net assets attributable to investments and mortgage loans payable (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets $ 10.2 $ (524.6) $ 36.5 $ (1,300.0)
Loans Payable        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets (1.1) (9.1) 3.2 (17.9)
Real Estate Properties        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets 102.0 (390.2) 34.7 (1,003.4)
Real Estate Joint Ventures        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets (56.7) (102.3) 36.3 (317.1)
Real Estate Operating Business        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets (27.8) (12.8) (28.0) 43.2
Loans Receivable        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]        
Total realized and unrealized (losses) gains included in changes in net assets $ (7.3) $ (19.3) $ (6.5) $ (22.7)