Organization (Details Textual)	6 Months Ended
	Jun. 30, 2020 Property apartment_home shares
Partially Owned Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	125
Number of apartment homes in apartment communities | apartment_home	32,938
Percentage of average ownership of portfolio	99.00%
Wholly And Partially Owned Consolidated Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	121
Number of apartment homes in apartment communities | apartment_home	32,796
AIMCO PROPERTIES, L.P [Member]
Organization [Line Items]
Common operating partnership units and equivalents outstanding | shares	159,195,031
Common operating partnership units and equivalents outstanding | shares	148,865,047
Percentage of the Aimco Operating Partnership's common partnership units and equivalents owned by Aimco	93.50%
Percentage of economic interest	94.90%