Summary of Significant Accounting Policies - Capitalization of Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Capitalized deferred leasing cost	$ 49.3	$ 43.1	$ 51.8
Deferred leasing costs	207.9	220.5
Accumulated amortization, deferred leasing costs and intangibles	605.1	558.3
Amortization expense on deferred leasing costs	$ 74.3	$ 76.8	$ 79.2