Earnings and Dividends per Share and per Unit - Reconciliations of Numerator and Denominator in Calculations of Basic and Diluted Earnings (Loss) per Share and per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Basic and dilutive net income (loss) attributable to the AIR Operating Partnership's common unitholders	$ 196,722	$ (18,030)	$ 572,603	$ 65,166
Dilutive net income (loss) attributable to Aimco common stockholders	$ 196,722	$ (18,030)	$ 572,603	$ 65,166
Denominator:
Basic weighted-average common shares outstanding	155,927	154,608	156,327	151,609
Dilutive common share equivalents outstanding	209		280	474
Dilutive weighted-average common shares outstanding	156,136	154,608	156,607	152,083
Basic weighted-average common units outstanding	166,023	162,698	166,434	159,701
Dilutive common unit equivalents outstanding	209		280	474
Dilutive weighted-average common units outstanding	166,232	162,698	166,714	160,175
Earnings (loss) per common unit - basic and diluted	$ 1.26	$ (0.12)	$ 3.66	$ 0.43
AIMCO Properties, LP [Member]
Numerator:
Basic and dilutive net income (loss) attributable to the AIR Operating Partnership's common unitholders	$ 209,471	$ (18,975)	$ 609,519	$ 68,657
Dilutive net income (loss) attributable to Aimco common stockholders	$ 209,471	$ (18,975)	$ 609,519	$ 68,657