Basis of Presentation and Organization (Details)	9 Months Ended
	Sep. 30, 2023 parcel apartment stateAndDistrict interest property shares
Real Estate Properties [Line Items]
Number of states and district | stateAndDistrict	10
Number of land parcels | parcel	1
Number of indirect land interests | interest	1
AIR Operating Partnership
Real Estate Properties [Line Items]
Common operating partnership units and equivalents outstanding (in shares)	156,840,617
Common operating partnership units and equivalents outstanding (in shares)	146,973,055
Percentage of the Aimco Operating Partnership's common partnership units and equivalents owned by Aimco	91.20%
Percentage of economic interest	93.60%
Partially Owned Properties
Real Estate Properties [Line Items]
Apartment communities owned by VIEs | property	75
Apartment homes in communities owned by VIEs | apartment	26,623
Percentage of average ownership of portfolio	81.00%