Fair Value Measurements - Schedule of Financial Instruments Not Measured at Fair Value on our Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Carrying value
Fair value of financial assets and liabilities
Loans receivable	$ 3,297.6	$ 1,682.1
Term loans	2,774.9	1,711.0
Mortgages payable	37.0	37.9
Notes and bonds payable	25,416.1	25,343.8
Fair value
Fair value of financial assets and liabilities
Loans receivable	3,334.7	1,684.8
Term loans	2,804.2	1,711.0
Mortgages payable	36.7	37.6
Notes and bonds payable	$ 24,529.1	$ 24,647.5