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Notes and Bonds Payable - Schedule of Debt (Details) - USD ($)
 1 Months Ended 3 Months Ended
May 31, 2025
Mar. 31, 2025
Oct. 07, 2025
Sep. 30, 2025
Sep. 26, 2025
Apr. 08, 2025
Dec. 31, 2024
Debt Instrument [Line Items]              
Notes and bonds payable       $ 4,485,706,000     $ 4,662,771,000
Line of credit | $1.5 billion Unsecured Credit Facility              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 149,000,000     0
Effective interest rate       5.00%      
Available to be drawn debt amount       $ 1,400,000,000      
Credit facility       1,500,000,000      
Medium-term notes | $200 million Unsecured Term Loan              
Debt Instrument [Line Items]              
Face amount   $ 200,000,000   200,000,000   $ 200,000,000  
Notes and bonds payable       $ 151,315,000     199,896,000
Effective interest rate       5.32%      
Repayments of debt   $ 25,000,000.0          
Debt fees           $ 100,000  
Medium-term notes | $300 million Unsecured Term Loan              
Debt Instrument [Line Items]              
Face amount       $ 300,000,000      
Notes and bonds payable       $ 268,651,000     299,981,000
Effective interest rate       5.32%      
Medium-term notes | $150 million Unsecured Term Loan              
Debt Instrument [Line Items]              
Face amount       $ 150,000,000      
Notes and bonds payable       $ 121,420,000     149,790,000
Effective interest rate       5.32%      
Medium-term notes | $200 million Unsecured Term Loan              
Debt Instrument [Line Items]              
Face amount       $ 200,000,000      
Notes and bonds payable       $ 199,576,000     199,641,000
Effective interest rate       5.22%      
Medium-term notes | $300 million Unsecured Term Loan              
Debt Instrument [Line Items]              
Face amount       $ 300,000,000      
Notes and bonds payable       $ 298,941,000     298,708,000
Effective interest rate       5.22%      
Medium-term notes | Term Loan due January 2026              
Debt Instrument [Line Items]              
Debt fees         $ 100,000    
Medium-term notes | Term Loan due January 2026 | Subsequent event              
Debt Instrument [Line Items]              
Face amount     $ 200,000,000        
Senior notes | Senior Notes due 2025              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 0     249,868,000
Effective interest rate       4.12%      
Repayments of debt $ 250,000,000            
Accrued interest $ 4,800,000            
Senior notes | Senior Notes due 2026              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 592,937,000     586,824,000
Effective interest rate       4.94%      
Senior notes | Senior Notes due 2027              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 491,525,000     488,104,000
Effective interest rate       4.76%      
Senior notes | Senior Notes due 2028              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 298,494,000     298,029,000
Effective interest rate       3.85%      
Senior notes | Senior Notes due 2030              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 594,343,000     586,028,000
Effective interest rate       5.30%      
Senior notes | Senior Notes due 2030              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 297,504,000     297,190,000
Effective interest rate       2.72%      
Senior notes | Senior Notes due 2031              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 296,734,000     296,343,000
Effective interest rate       2.25%      
Senior notes | Senior Notes due 2031              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 681,124,000     667,233,000
Effective interest rate       5.13%      
Mortgages | Mortgage notes payable              
Debt Instrument [Line Items]              
Notes and bonds payable       $ 44,142,000     $ 45,136,000
Mortgages | Mortgage notes payable | Minimum              
Debt Instrument [Line Items]              
Effective interest rate       3.57%      
Mortgages | Mortgage notes payable | Maximum              
Debt Instrument [Line Items]              
Effective interest rate       6.88%