Long-Term Debt - Mortgage Facilities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Outstanding debt	$ 1,782.7	$ 1,852.0
Revolving Mortgage Facility
Debt Instrument [Line Items]
Maximum credit available	500.0
Current borrowing capacity	$ 408.3
Line of credit basis spread on variable rate, increase (decrease) (as a percent)	1.68%
Outstanding debt	$ 42.0
Mortgage facilities
Debt Instrument [Line Items]
Outstanding debt	$ 379.5	$ 474.8