Mortgages and Notes Payable (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2025 USD ($) extension	Jul. 22, 2025 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Mortgages and notes payable	$ 3,334,385,000	$ 3,334,385,000		$ 3,293,559,000
Unamortized debt issuance costs	$ (12,808,000)	(12,808,000)		(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	$ 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	147,000,000.0	$ 147,000,000.0
Outstanding letters of credit on revolving credit facility	100,000	100,000
Unused borrowing capacity on revolving credit facility	602,900,000	602,900,000
Variable Rate Term Loan Due 2026 [Member]
Debt Instrument [Line Items]
Principal amount of debt	200,000,000.0	200,000,000.0
Secured indebtedness [Member]
Debt Instrument [Line Items]
Mortgages and notes payable	707,567,000	707,567,000		712,186,000
Aggregate undepreciated book value of secured real estate assets	1,240,400,000	1,240,400,000
Unsecured indebtedness [Member]
Debt Instrument [Line Items]
Mortgages and notes payable	$ 2,639,626,000	$ 2,639,626,000		$ 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			$ 137,000,000.0
Outstanding letters of credit on revolving credit facility			100,000
Unused borrowing capacity on revolving credit facility			$ 612,900,000