Debt - Summary of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Notes Payable, Unsecured Notes and Credit Facility
Credit Facility	$ 0	$ 0
Commercial paper	70,000
Long-Term Debt, Gross	8,002,301	8,377,827
Deferred financing costs and debt discount	(55,296)	(61,782)
Total	$ 7,947,005	$ 8,316,045
Weighted average interest rate, debt (as a percent)	3.40%	3.40%
Unsecured notes
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	$ 7,250,000
Secured Debt
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	682,301
Mortgage Notes Payable, Unsecured Notes, and Term Loans
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	$ 7,932,301	$ 8,377,827
Weighted average interest rate, debt (as a percent)	3.40%	3.40%
Fixed rate unsecured notes | Unsecured notes
Notes Payable, Unsecured Notes and Credit Facility
Fixed rate notes	$ 7,250,000	$ 7,500,000
Weighted average interest rate, debt (as a percent)	3.30%	3.30%
Term Loan | Unsecured notes
Notes Payable, Unsecured Notes and Credit Facility
Variable rate notes	$ 0	$ 150,000
Weighted average interest rate, debt (as a percent)	0.00%	5.40%
Fixed rate mortgage notes payable - conventional and tax-exempt | Secured Debt
Notes Payable, Unsecured Notes and Credit Facility
Fixed rate notes	$ 270,851	$ 270,677
Weighted average interest rate, debt (as a percent)	3.40%	3.40%
Variable rate mortgage notes payable - conventional and tax-exempt | Secured Debt
Notes Payable, Unsecured Notes and Credit Facility
Variable rate notes	$ 411,450	$ 457,150
Weighted average interest rate, debt (as a percent)	5.60%	5.30%
Credit Facility
Notes Payable, Unsecured Notes and Credit Facility
Commercial paper	$ 70,000	$ 0
Weighted average interest rate, debt (as a percent)	0.00%	0.00%
Commercial paper
Notes Payable, Unsecured Notes and Credit Facility
Weighted average interest rate, debt (as a percent)	5.90%	0.00%