Debt - Summary of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Notes Payable, Unsecured Notes and Credit Facility
Credit Facility	$ 0	$ 0
Commercial paper	0	0
Long-Term Debt, Gross	8,126,927	8,377,827
Deferred financing costs and debt discount	(60,032)	(61,782)
Total	$ 8,066,895	$ 8,316,045
Weighted average interest rate, debt (as a percent)	3.50%	3.40%
Unsecured notes
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	$ 7,400,000
Secured Debt
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	726,927
Mortgage Notes Payable, Unsecured Notes, and Term Loans
Notes Payable, Unsecured Notes and Credit Facility
Notes Payable	$ 8,126,927	$ 8,377,827
Weighted average interest rate, debt (as a percent)	3.50%	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	$ 150,000	$ 150,000
Weighted average interest rate, debt (as a percent)	5.90%	5.40%
Fixed rate mortgage notes payable - conventional and tax-exempt | Secured Debt
Notes Payable, Unsecured Notes and Credit Facility
Fixed rate notes	$ 270,677	$ 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	$ 456,250	$ 457,150
Weighted average interest rate, debt (as a percent)	5.60%	5.30%
Credit Facility
Notes Payable, Unsecured Notes and Credit Facility
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)	0.00%	0.00%