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Investments in Partially Owned Entities - Summary of Company's Unconsolidated Joint Ventures Deemed to be VIEs (Details) | Sep. 30, 2025 ApartmentUnit Entity Property JointVenture Project PropertiesProjectsEntities
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Variable Interest Entity [Line Items] |
Properties | Property | 318
Apartment units | 86,320
Variable Interest Entity, Not Primary Beneficiary |
Variable Interest Entity [Line Items] |
Properties | JointVenture | 2
Properties/Projects/Entities | PropertiesProjectsEntities | 12
Apartment units | 2,877
Variable Interest Entity, Not Primary Beneficiary | Operating Properties [Member] |
Variable Interest Entity [Line Items] |
Properties | Property | 3
Apartment units | 1,169
Variable Interest Entity, Not Primary Beneficiary | Development Lease-Up Projects [Member] |
Variable Interest Entity [Line Items] |
Properties | Property | 2
Apartment units | 543
Variable Interest Entity, Not Primary Beneficiary | Real Estate Holdings [Member] |
Variable Interest Entity [Line Items] |
Entities | Entity | 3
Variable Interest Entity, Not Primary Beneficiary | Projects Under Development [Member] |
Variable Interest Entity [Line Items] |
Project | Project | 2
Apartment units | 639
Variable Interest Entity, Not Primary Beneficiary | Projects Held for Development [Member] |
Variable Interest Entity [Line Items] |
Project | Project | 2
Apartment units | 526

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