Variable Interest Entities - Schedule of VIEs Consolidated by the AIR Operating Partnership (Details)	Mar. 31, 2026 entity property apartment properties	Dec. 31, 2025 entity property apartment
Variable Interest Entity [Line Items]
Apartment communities owned by VIEs | properties	2
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
VIEs with interests in apartment communities | entity	3	3
Apartment communities owned by VIEs | property	13	13
Apartment homes in communities owned by VIEs | apartment	4,542	4,542