Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument
Deferred financing costs, net and other	$ (59,960)	$ (63,572)
Total, net	5,715,138	5,829,018
Long term debt	$ 2,561,717	2,560,025
Mortgages Payable:
Debt Instrument
Interest rate, end of period (percent)	4.47%
Long-term debt, gross	$ 5,761,815	5,877,615
Deferred financing costs, net and other	(46,677)	(48,597)
Total, net	$ 5,715,138	5,829,018
Mortgages Payable: | Fixed rate
Debt Instrument
Interest rate, end of period (percent)	3.63%
Long-term debt, gross	$ 3,569,100	3,570,000
Mortgages Payable: | Variable rate
Debt Instrument
Interest rate, end of period (percent)	5.83%
Long-term debt, gross	$ 2,192,715	2,307,615
Mortgages Payable: | Variable rate | Interest Rate Cap
Debt Instrument
Derivative, notional amount	$ 2,009,119
Cap strike rate (as percent)	4.18%
Derivative, average remaining maturity (in months)	10 months
Unsecured Debt:
Debt Instrument
Interest rate, end of period (percent)	3.02%
Long-term debt, gross	$ 1,200,000	1,200,000
Deferred financing costs, net and other	(7,147)	(8,168)
Long term debt	$ 1,192,853	1,191,832
Unsecured term loan
Debt Instrument
Interest rate, end of period (percent)	4.04%
Long-term debt, gross	$ 800,000	800,000
Deferred financing costs, net and other	(6,136)	(6,807)
Long term debt	$ 793,864	793,193
Unsecured revolving credit facilities
Debt Instrument
Interest rate, end of period (percent)	3.87%
Long term debt	$ 575,000	$ 575,000