Mortgage Debt - Schedule of Aggregate Maturities of Mortgage Loans (Details) - Mortgage debt - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
2023 (remainder)	$ 123.1
2024	105.7
2025	223.6
2026	522.0
2027	405.4
Thereafter	1,456.2
Long-term debt, gross	2,836.0
Unamortized debt discount	(0.9)	$ (0.6)
Unamortized loan fees	(13.9)	(16.5)
Total debt	$ 2,821.2	$ 3,018.0

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