Earnings and Dividends per Share and Unit - Schedule of Calculations of Basic and Diluted Earnings per Share and per Unit and Non-dilutive Securities (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Basic and dilutive net income attributable to Aimco common stockholders	$ 39,212	$ 59,234	$ 45,891	$ 330,802
Basic weighted-average Common Stock outstanding	148,535	148,367	148,527	146,994
Dilutive share equivalents outstanding	18	232	143	226
Dilutive weighted-average Common Stock outstanding	148,553	148,599	148,670	147,220
Net income attributable to Aimco per common share – basic and diluted	$ 0.26	$ 0.40	$ 0.31	$ 2.25
Non-dilutive share equivalents outstanding	8,929		8,260
AIMCO Properties, LP [Member]
Schedule of Earnings Per Share and Dividends Per Share [Line Items]
Basic and dilutive net income attributable to Aimco common stockholders	$ 41,319	$ 62,817	$ 48,366	$ 349,456
Basic weighted-average Common Stock outstanding	156,509	156,637	156,584	155,158
Dilutive share equivalents outstanding	18	381	218	359
Dilutive weighted-average Common Stock outstanding	156,527	157,018	156,802	155,517
Net income attributable to Aimco per common share – basic and diluted	$ 0.26	$ 0.40	$ 0.31	$ 2.25
Non-dilutive share equivalents outstanding	2,081		1,214