Debt - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Mortgages Payable
Mortgages and Line of Credit Facility [Line Items]
Net carrying value of real estate collateralizing the mortgages payable	$ 1,800.0	$ 1,800.0
Mortgages Payable | Interest rate swaps and caps
Mortgages and Line of Credit Facility [Line Items]
Derivative notional amount	1,300.0	1,300.0
Credit Facility
Mortgages and Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	1,400.0	1,400.0
Credit Facility | Revolving Credit Facility
Mortgages and Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	1,000.0	1,000.0
Credit Facility | Tranche A-1 Term Loan
Mortgages and Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	200.0	200.0
Credit Facility | Tranche A-2 Term Loan
Mortgages and Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 200.0	$ 200.0