Business - Ownership Breakdown (Details)	Mar. 31, 2022 Property ApartmentUnit
Property/Unit schedule
Properties \| Property	311
Apartment Units \| ApartmentUnit	80,581
Wholly Owned Properties
Property/Unit schedule
Properties \| Property	295
Apartment Units \| ApartmentUnit	77,035
Partially Owned Properties - Consolidated
Property/Unit schedule
Properties \| Property	16
Apartment Units \| ApartmentUnit	3,546

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration