Debt - Narrative (Details)		1 Months Ended			12 Months Ended
	Feb. 28, 2019 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) extensionOption	Feb. 28, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Repayment of unsecured debt					$ 100,000,000	$ 462,147,000	$ 958,680,000
Commercial paper, maximum aggregate amount outstanding		$ 500,000,000			500,000,000
Commercial paper		0			0	0
Loss on extinguishment of debt, net					1,646,000	17,787,000	$ 9,333,000
Total net real estate		19,025,339,000			$ 19,025,339,000	18,709,584,000
Percentage of principle amount at which the entity may redeem some or all of the notes					100.00%
Asset Pledged as Collateral | Notes Payable, Other Payables
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Total net real estate		1,182,381,000			$ 1,182,381,000
Variable rate unsecured credit facility
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Amount available under the Credit Facility		2,248,086,000			2,248,086,000
Outstanding balance of letters of credit		$ 1,914,000			$ 1,914,000	11,969,000
Available borrowing capacity	$ 1,750,000,000		$ 2,250,000,000
Number of extension options, line of credit | extensionOption			2
Term of extension options, line of credit			6 months
Extension fee			$ 1,406,000
Capitalization rate	6.00%		5.75%
Line of credit facility accordion feature, higher borrowing capacity option			$ 3,000,000,000
Line of credit facility, commitment fee (as a percent)	0.125%				0.125%
Percent of credit facility available to competitive bid option		65.00%			65.00%
Variable rate unsecured credit facility | Minimum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Line of credit facility, commitment fee (as a percent)					0.10%
Variable rate unsecured credit facility | Maximum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Line of credit facility, commitment fee (as a percent)					0.30%
Variable rate unsecured credit facility | Secured Overnight Financing Rate (SOFR)
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, effective interest rate (as a percent)		5.13%			5.13%
Debt instrument, basis spread on variable rate (as a percent)					0.825%
Variable rate unsecured credit facility | Secured Overnight Financing Rate (SOFR) | Minimum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					0.65%
Variable rate unsecured credit facility | Secured Overnight Financing Rate (SOFR) | Maximum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					1.40%
Variable rate unsecured credit facility | SOFR Adjustment
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					0.10%
Variable rate unsecured credit facility | SOFR Base Rate
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					0.725%
Variable rate unsecured credit facility | LIBOR
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)	0.775%
Additional letters of credit
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Outstanding balance of letters of credit		$ 48,740,000			$ 48,740,000	$ 39,581,000
Notes Payable Maturities 2047
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Loss on extinguishment of debt, net			1,399,000
Unsecured notes | Minimum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					0.10%
Unsecured notes | Maximum
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)					0.30%
Unsecured notes | Variable Rate Unsecured Term Loan $100 Million
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Repayment of unsecured debt				$ 100,000,000
Unsecured notes | Notes Payable Maturities 2047
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Stated interest rate (as a percent)		4.15%			4.15%
Unsecured notes | Unsecured Notes, 5.00%
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Stated interest rate (as a percent)		5.00%			5.00%
Debt instrument, effective interest rate (as a percent)		4.37%			4.37%
Secured notes | Notes Payable Maturities 2047
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Repayments of secured debt			$ 35,276,000
Stated interest rate (as a percent)			6.16%
Unsecured Notes, 5.00%
Mortgage Notes Payable, Unsecured Notes and Credit Facility
Face amount, debt instrument		$ 350,000,000			$ 350,000,000
Proceeds from issuance of debt		$ 346,290,000