Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	Total	AIMCO Properties, LP [Member]	AIMCO Properties, LP [Member] Cumulative Effect, Period of Adoption, Adjustment	AIMCO Properties, LP [Member] Preferred Units [Member]	AIMCO Properties, LP [Member] General Partner and Special Limited Partner [Member]	AIMCO Properties, LP [Member] General Partner and Special Limited Partner [Member] Cumulative Effect, Period of Adoption, Adjustment	AIMCO Properties, LP [Member] Limited Partners [Member]	AIMCO Properties, LP [Member] Partners Capital Attributable to the Partnership [Member]	AIMCO Properties, LP [Member] Partners Capital Attributable to the Partnership [Member] Cumulative Effect, Period of Adoption, Adjustment	AIMCO Properties, LP [Member] Noncontrolling Interests [Member]
Balances at Dec. 31, 2017		$ 1,655,753		$ 125,000	$ 1,538,144		$ (5,675)	$ 1,657,469		$ (1,716)
Increase (Decrease) in Partners' Capital [Roll Forward]
Repurchases of common partnership units held by AIR's Predecessor		(373,592)			(373,592)			(373,592)
Issuance of Aimco Operating Partnership units	$ 50,151	50,151					50,151	50,151
Redemption of common partnership units		(9,639)					(9,639)	(9,639)
Amortization of share-based compensation cost		9,765			8,074		1,691	9,765
Effect of changes in ownership for consolidated entities		(10,101)			(19,115)		9,014	(10,101)
Change in accumulated other comprehensive income	1,260	1,260			1,191		69	1,260
Net income	708,864	708,864			666,227		34,417	700,644		8,220
Distributions to noncontrolling interests	(22,310)	(22,310)					(12,839)	(12,839)		(9,471)
Distributions to common unitholders		(238,067)			(238,067)			(238,067)
Distributions to preferred unitholders		(8,594)			(8,594)			(8,594)
Other, net		151			151			151
Balances at Dec. 31, 2018		1,763,641		125,000	1,574,419		67,189	1,766,608		(2,967)
Increase (Decrease) in Partners' Capital [Roll Forward]
Repurchases of common partnership units held by AIR's Predecessor		(20,682)			(20,682)			(20,682)
Redemption of preferred units held by AIR’s Predecessor		(125,000)		(125,000)				(125,000)
Issuance of Aimco Operating Partnership units	3,034	3,034					3,034	3,034
Redemption of common partnership units		(6,467)			6,243		(12,710)	(6,467)
Amortization of share-based compensation cost		9,108			5,924		3,184	9,108
Effect of changes in ownership for consolidated entities					(13,243)		9,821	(3,422)		3,422
Purchase of noncontrolling interest in consolidated real estate partnerships		(3,844)								(3,844)
Change in accumulated other comprehensive income	(637)	(637)			(599)		(38)	(637)
Net income	500,514	500,514			474,083		26,049	500,132		382
Distributions to noncontrolling interests	(13,395)	(13,395)					(13,087)	(13,087)		(308)
Distributions to common unitholders		(241,643)			(241,643)			(241,643)
Common partnership units issued to common unitholders in special distribution		(740)			(740)			(740)
Distributions to preferred unitholders		(3,246)			(3,246)			(3,246)
Other, net		152			133			133		19
Balances at Dec. 31, 2019		1,860,795			1,780,649		83,442	1,864,091		(3,296)
Increase (Decrease) in Partners' Capital [Roll Forward]
Repurchases of common partnership units held by AIR's Predecessor		(10,004)			(10,004)			(10,004)
Issuance of Preferred Stock		2,000		2,000				2,000
Redemption of common partnership units		(2,642)			5,139		(7,781)	(2,642)
Amortization of share-based compensation cost		9,241			4,900		4,341	9,241
Effect of changes in ownership for consolidated entities		438,470			494,589		5,201	499,790		(61,320)
Contribution from noncontrolling interest in consolidated realestate partnerships	4,701	4,701								4,701
Change in accumulated other comprehensive income	(1,236)	(1,236)			(1,156)		(80)	(1,236)
Net income	(109,944)	(109,944)			(104,127)		(5,438)	(109,565)		(379)
Distributions to noncontrolling interests	$ (18,182)	(18,182)					(16,500)	(16,500)		(1,682)
Distributions to common unitholders		(304,992)			(304,992)			(304,992)
Distributions to Aimco for the business separation		(559,856)			(559,753)			(559,753)		(103)
Other, net		19			(117)			(117)		136
Balances at Dec. 31, 2020		$ 1,308,093	$ (277)	$ 2,000	$ 1,304,851	$ (277)	$ 63,185	$ 1,370,036	$ (277)	$ (61,943)