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Investments in Partially Owned Entities - Summary of Company's Consolidated Joint Ventures (Details)	Sep. 30, 2025 Property ApartmentUnit PropertiesProjects Project
Variable Interest Entity [Line Items]
Properties | Property	318
Apartment units	86,320
Consolidated VIE [Member]
Variable Interest Entity [Line Items]
Total Properties/Projects | PropertiesProjects	13
Apartment units	3,096
Consolidated VIE [Member] | Operating Properties [Member]
Variable Interest Entity [Line Items]
Properties | Property	12
Apartment units	2,656
Consolidated VIE [Member] | Projects Under Development [Member]
Variable Interest Entity [Line Items]
Project | Project	1
Apartment units	440

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