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Notes and Bonds Payable (Details) - USD ($)
Apr. 26, 2023
Jun. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]      
Notes and bonds payable   $ 5,340,272,000 $ 5,351,827,000
Extension period for maturity date 1 year    
Debt fees $ 400,000    
Mortgage notes payable | Minimum      
Debt Instrument [Line Items]      
Effective interest rate   3.57%  
Mortgage notes payable | Maximum      
Debt Instrument [Line Items]      
Effective interest rate   4.84%  
Line of credit | $1.5 billion Unsecured Credit Facility      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 354,000,000 385,000,000
Effective interest rate   6.05%  
Credit facility   $ 1,500,000,000  
Medium-term notes | $350 million Unsecured Term Loan due 2023, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 349,499,000 349,114,000
Effective interest rate   6.21%  
Face amount   $ 350,000,000  
Medium-term notes | $200 million Unsecured Term Loan due 2024, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 199,786,000 199,670,000
Effective interest rate   6.21%  
Face amount   $ 200,000,000  
Medium-term notes | $300 million Unsecured Term Loan due 2025, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 299,947,000 299,936,000
Effective interest rate   6.21%  
Face amount   $ 300,000,000  
Medium-term notes | $150 million Unsecured Term Loan due 2026, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 149,569,000 149,495,000
Effective interest rate   6.21%  
Face amount   $ 150,000,000  
Medium-term notes | $200 million Unsecured Term Loan due 2027, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 199,432,000 199,362,000
Effective interest rate   6.21%  
Face amount   $ 200,000,000  
Medium-term notes | $300 million Unsecured Term Loan due 2028, net of issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 298,079,000 297,869,000
Effective interest rate   6.21%  
Face amount   $ 300,000,000  
Senior notes | Senior Notes due 2025, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 249,298,000 249,115,000
Effective interest rate   4.12%  
Senior notes | Senior Notes due 2026, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 575,256,000 571,587,000
Effective interest rate   4.94%  
Senior notes | Senior Notes due 2027, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 481,615,000 479,553,000
Effective interest rate   4.76%  
Senior notes | Senior Notes due 2028      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 297,138,000 296,852,000
Effective interest rate   3.85%  
Senior notes | Senior notes due 2030, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 570,356,000 565,402,000
Effective interest rate   5.30%  
Senior notes | Senior notes due 2030, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 296,579,000 296,385,000
Effective interest rate   2.72%  
Senior notes | Senior Notes due 2031, net of discount and issuance costs      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 295,795,000 295,547,000
Effective interest rate   2.25%  
Senior notes | Senior Notes due 2031      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 640,999,000 632,693,000
Effective interest rate   5.13%  
Mortgages | Mortgage notes payable      
Debt Instrument [Line Items]      
Notes and bonds payable   $ 82,924,000 $ 84,247,000