Real Estate Disposition Activities (Details) ft² in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2024 USD ($) community home ft²	Jun. 30, 2024 USD ($) home ft²	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) ft² community	Sep. 30, 2023 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Number of communities held for sale | community	2			2
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of communities	$ 172,973		$ 22,121	$ 241,459	$ 209,430
AVA Belltown
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes sold | home		100
Proceeds from sale of real estate		$ 34,000
Gain on sale of communities		$ 22,673
Square feet of commercial space | ft²		1
AVA North Hollywood
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes sold | home		156
Proceeds from sale of real estate		$ 62,100
Gain on sale of communities		$ 874
Square feet of commercial space | ft²		11
Avalon Hackensack at Riverside
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes sold | home		226
Proceeds from sale of real estate		$ 85,600
Gain on sale of communities		$ 44,834
Square feet of commercial space | ft²		0
AVA Theater District
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes sold | home	398
Proceeds from sale of real estate	$ 212,000
Gain on sale of communities	$ 77,254
Square feet of commercial space | ft²	0			0
Avalon Darien
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of apartment homes sold | home	189
Proceeds from sale of real estate	$ 120,000
Gain on sale of communities	$ 95,732
Square feet of commercial space | ft²	0			0