Debt - Narrative (Details) - USD ($)	1 Months Ended		9 Months Ended
	Jul. 31, 2024	May 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Notes Payable, Unsecured Notes and Credit Facility
Commercial paper, maximum borrowing capacity			$ 500,000,000
Net carrying value of apartment communities and improved land parcels securing debt			19,569,718,000	$ 19,342,871,000
Unsecured Notes 5.350 Percent
Notes Payable, Unsecured Notes and Credit Facility
Assumption of fixed rate mortgage loan		$ 400,000,000
Proceeds from issuance of debt		$ 396,188,000
Asset Pledged as Collateral | Notes Payable, Other Payables
Notes Payable, Unsecured Notes and Credit Facility
Net carrying value of apartment communities and improved land parcels securing debt			1,254,473,000
Credit Facility
Notes Payable, Unsecured Notes and Credit Facility
Available borrowing capacity			$ 2,250,000,000	$ 2,250,000,000
Annual facility fee, percentage			0.12%
Line of credit facility, commitment fee percentage, increase (decrease)	0.005%
Credit Facility | Minimum
Notes Payable, Unsecured Notes and Credit Facility
Annual facility fee, percentage			0.095%
Credit Facility | Maximum
Notes Payable, Unsecured Notes and Credit Facility
Annual facility fee, percentage			0.295%
Credit Facility | Secured Overnight Financing Rate (SOFR)
Notes Payable, Unsecured Notes and Credit Facility
Current interest rate (as a percent)			5.77%
Debt instrument, basis spread on variable rate (as a percent)			0.805%
Debt instrument, basis spread on variable rate, increase (decrease)	0.02%
Credit Facility | Secured Overnight Financing Rate (SOFR) | Minimum
Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)			0.63%
Credit Facility | Secured Overnight Financing Rate (SOFR) | Maximum
Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)			1.38%
Credit Facility | SOFR Adjustment
Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)			0.10%
Credit Facility | SOFR Base Rate
Notes Payable, Unsecured Notes and Credit Facility
Debt instrument, basis spread on variable rate (as a percent)			0.705%
Unsecured Notes 5.350 Percent | Unsecured notes
Notes Payable, Unsecured Notes and Credit Facility
Current interest rate (as a percent)		5.05%
Fixed interest rate		5.35%