Variable Interest Entities - Schedule of VIEs Consolidated by the AIR Operating Partnership (Details)	3 Months Ended
	Sep. 30, 2023 apartment	Dec. 31, 2022 apartment
Joint Venture Partner
Variable Interest Entity [Line Items]
Apartment communities owned by VIEs	175
Apartment homes in communities owned by VIEs	328
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
VIEs with interests in apartment communities	3	5
Apartment communities owned by VIEs	14	16
Apartment homes in communities owned by VIEs	4,866	5,369
Equity method investment, ownership interest sold	47.00%