Held for Sale/Disposed Assets (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) property	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of properties (property) | property	252
Disposed of by Sale | Northern New Jersey/New York
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of properties (property) | property	3	1
Proceeds from sale of real estate	$ 159.7	$ 32.7
Gain on sale of real estate	$ 107.1	$ 13.4
Disposed of by Sale | Seattle
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of properties (property) | property	1	1
Proceeds from sale of real estate	$ 8.6	$ 10.3
Gain on sale of real estate	$ 5.1	$ 3.2
Disposed of by Sale | Washington, D.C.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of properties (property) | property			3
Proceeds from sale of real estate			$ 51.3
Gain on sale of real estate			$ 17.8
Disposed of by Sale | Miami
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Number of properties (property) | property			1
Proceeds from sale of real estate			$ 22.2
Gain on sale of real estate			$ 9.0