Organization (Details Textual)	9 Months Ended
	Sep. 30, 2019 Property apartment_home shares
Organization [Line Items]
Common partnership units and equivalents outstanding | shares	148,884,686
Partially Owned Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	128
Number of apartment homes in apartment communities | apartment_home	33,824
Wholly And Partially Owned Consolidated Properties [Member]
Organization [Line Items]
Number of apartment communities | Property	124
Number of apartment homes in apartment communities | apartment_home	33,682
AIMCO PROPERTIES, L.P [Member]
Organization [Line Items]
Common partnership units and equivalents outstanding | shares	158,447,276
AIMCO-GP, Inc. [Member]
Organization [Line Items]
Percentage of the Aimco Operating Partnership's common partnership units and equivalents owned by Aimco	94.00%