Long-Term Debt - Mortgage Facilities (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Outstanding debt	$ 1,571.0	$ 1,852.0
Revolving Mortgage Facility
Debt Instrument [Line Items]
Maximum credit available	500.0
Current borrowing capacity	$ 414.7
Line of credit basis spread on variable rate, increase (decrease) (as a percent)	1.68%
Outstanding debt	$ 408.3
Mortgage facilities
Debt Instrument [Line Items]
Outstanding debt	$ 735.1	$ 474.8