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Business Segments (Details Textual) $ in Millions	3 Months Ended
Business Segments (Details Textual) $ in Millions	Mar. 31, 2025 USD ($) ApartmentHome Community Dwelling Segment Property	Dec. 31, 2024 USD ($)	Jan. 01, 2024 ApartmentHome Property
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	3
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	President and Chief Executive Officer [Member]
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Our CODM evaluates performance and allocates resources for all of our segments using historical and projected property net operating income (“PNOI”), which is our measure of segment profit or loss. PNOI is defined as rental and other property revenues, excluding utility reimbursements, less direct property operating expenses, including utility reimbursements, for the consolidated communities
Development and Redevelopment [Member]
Segment Reporting Information [Line Items]
Right-of-use lease assets \| $	$ 107.4	$ 107.7
Lease liabilities \| $	$ 122.9	$ 121.8
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Number of real estate properties \| ApartmentHome	5,243
Planned Homes [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Number of real estate properties \| Property	16
Accessory Dwelling Units [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Number of units in real estate property \| Dwelling	8
Real Estate Partnership [Member]
Segment Reporting Information [Line Items]
Number of real estate properties \| Property	9
Wholly And Partially Owned Consolidated Properties [Member] \| Operating Portfolio Segment [Member]
Segment Reporting Information [Line Items]
Number of real estate properties \| Property			20
Wholly And Partially Owned Consolidated Properties [Member] \| Planned Apartment Homes [Member] \| Operating Portfolio Segment [Member]
Segment Reporting Information [Line Items]
Number of units in real estate property \| ApartmentHome			5,243
Unconsolidated Investment in IQHQ and Mezzanine Investment [Member]
Segment Reporting Information [Line Items]
Number of apartment communities \| Community	4
Number of apartment homes \| ApartmentHome	142