Mortgages and Notes Payable (Details)	3 Months Ended
	Mar. 31, 2025 USD ($) extension	Apr. 22, 2025 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Mortgages and notes payable	$ 3,338,492,000		$ 3,293,559,000
Unamortized debt issuance costs	$ (13,629,000)		(14,442,000)
Maximum liquidity requirements	1 year
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity on credit facility	$ 750,000,000.0
Number of additional extensions | extension	2
Term of optional extension	6 months
Temporary reduction in interest rate due to sustainability goals (in hundredths)	0.025%
Amount outstanding on revolving credit facility	$ 150,000,000.0
Outstanding letters of credit on revolving credit facility	100,000
Unused borrowing capacity on revolving credit facility	599,900,000
Secured indebtedness [Member]
Debt Instrument [Line Items]
Mortgages and notes payable	709,901,000		712,186,000
Aggregate undepreciated book value of secured real estate assets	1,233,600,000
Unsecured indebtedness [Member]
Debt Instrument [Line Items]
Mortgages and notes payable	$ 2,642,220,000		$ 2,595,815,000
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Facility interest rate basis	SOFR
Interest rate, basis spread (in hundredths)	0.85%
Annual facility fee (in hundredths)	0.20%
SOFR Related Spread Adjustment [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate, basis spread (in hundredths)	0.10%
Subsequent Event [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amount outstanding on revolving credit facility		$ 145,000,000.0
Outstanding letters of credit on revolving credit facility		100,000
Unused borrowing capacity on revolving credit facility		$ 604,900,000