Notes and Bonds Payable (Details) - USD ($)	1 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Notes and bonds payable		$ 5,108,279,000	$ 4,994,859,000
Subsequent event
Debt Instrument [Line Items]
Extension period for maturity date	1 year
Debt fees	$ 300,000
Mortgage notes payable | Minimum
Debt Instrument [Line Items]
Effective interest rate		3.57%
Mortgage notes payable | Maximum
Debt Instrument [Line Items]
Effective interest rate		6.88%
Line of credit | $1.5 billion Unsecured Credit Facility
Debt Instrument [Line Items]
Notes and bonds payable		$ 120,000,000	0
Effective interest rate		6.27%
Credit facility		$ 1,500,000,000
Medium-term notes | $200 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 199,961,000	199,903,000
Effective interest rate		6.36%
Face amount		$ 200,000,000
Medium-term notes | $350 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 349,885,000	349,798,000
Effective interest rate		6.36%
Face amount		$ 350,000,000
Medium-term notes | $300 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 299,964,000	299,958,000
Effective interest rate		6.36%
Face amount		$ 300,000,000
Medium-term notes | $150 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 149,679,000	149,643,000
Effective interest rate		6.36%
Face amount		$ 150,000,000
Medium-term notes | $200 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 199,536,000	199,502,000
Effective interest rate		6.36%
Face amount		$ 200,000,000
Medium-term notes | $300 million Unsecured Term Loan
Debt Instrument [Line Items]
Notes and bonds payable		$ 298,393,000	298,288,000
Effective interest rate		6.36%
Face amount		$ 300,000,000
Senior notes | Senior Notes due 2025
Debt Instrument [Line Items]
Notes and bonds payable		$ 249,579,000	249,484,000
Effective interest rate		4.12%
Senior notes | Senior Notes due 2026
Debt Instrument [Line Items]
Notes and bonds payable		$ 580,933,000	579,017,000
Effective interest rate		4.94%
Senior notes | Senior Notes due 2027
Debt Instrument [Line Items]
Notes and bonds payable		$ 484,802,000	483,727,000
Effective interest rate		4.76%
Senior notes | Senior Notes due 2028
Debt Instrument [Line Items]
Notes and bonds payable		$ 297,577,000	297,429,000
Effective interest rate		3.85%
Senior notes | Senior Notes due 2030
Debt Instrument [Line Items]
Notes and bonds payable		$ 578,038,000	575,443,000
Effective interest rate		5.30%
Senior notes | Senior Notes due 2030
Debt Instrument [Line Items]
Notes and bonds payable		$ 296,881,000	296,780,000
Effective interest rate		2.72%
Senior notes | Senior Notes due 2031
Debt Instrument [Line Items]
Notes and bonds payable		$ 295,958,000	295,832,000
Effective interest rate		2.25%
Senior notes | Senior Notes due 2031
Debt Instrument [Line Items]
Notes and bonds payable		$ 653,864,000	649,521,000
Effective interest rate		5.13%
Mortgages | Mortgage notes payable
Debt Instrument [Line Items]
Notes and bonds payable		$ 53,229,000	$ 70,534,000