Mortgages Payable - Summary of Mortgages Payable (Details) - Mortgages payable $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) mortgage property	Dec. 31, 2022 USD ($) property mortgage
Debt
Number of properties | property	131	136
Weighted Average Stated Interest Rate (as a percent)	4.80%	4.80%
Weighted Average Effective Interest Rate (as a percent)	3.30%	3.30%
Weighted Average Remaining Years Until Maturity	4 months 24 days	1 year 4 months 24 days
Remaining Principal Balance	$ 822.4	$ 842.3
Unamortized Premium (Discount) and Deferred Financing Costs Balance, net	(0.8)	11.6
Mortgage Payable Balance	$ 821.6	$ 853.9
Number of mortgages | mortgage	16	18
Number of Sterling-denominated mortgages paid quarterly | mortgage	1	1
Minimum
Debt
Weighted Average Effective Interest Rate (as a percent)	0.50%	2.70%
Stated interest rate (as a percent)	3.00%	3.00%
Maximum
Debt
Weighted Average Effective Interest Rate (as a percent)	6.60%	6.60%
Stated interest rate (as a percent)	6.90%	6.90%