Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
REVENUES
Rental and other property revenues	$ 224,552	$ 230,235
OPERATING EXPENSES
Property operating expenses	75,480	78,959
Depreciation and amortization	100,476	93,565
General and administrative expenses	10,108	9,829
Investment management expenses	1,184	1,332
Other expenses, net	1,642	5,136
Total operating expenses	188,890	188,821
Interest income	4,523	2,726
Interest expense	(41,336)	(41,409)
(Loss) gain on dispositions of real estate	(34)	291,473
Mezzanine / Unconsolidated partnerships investment income, net	6,747	0
Income before income tax benefit (expense)	5,744	294,276
Income tax benefit (expense)	3,233	(2,981)
Net income	8,977	291,295
Noncontrolling interests:
Net income attributable to noncontrolling interests in consolidated real estate partnerships	(18)	(91)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership	(1,869)	(1,934)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	(368)	(15,137)
Net income attributable to noncontrolling interests	(2,255)	(17,162)
Net income attributable to the company	6,722	274,133
Net income attributable to the company's preferred equity holders	0	(2,148)
Net income attributable to participating securities	(43)	(417)
Net income attributable to the company's common equity holders	$ 6,679	$ 271,568
Net income attributable to Aimco per common share – basic and diluted	$ 0.04	$ 1.88
Weighted average common shares/units outstanding - basic	148,518	144,232
Weighted average common shares/units outstanding - diluted	148,786	144,445
AIMCO Properties, LP [Member]
REVENUES
Rental and other property revenues	$ 224,552	$ 230,235
OPERATING EXPENSES
Property operating expenses	75,480	78,959
Depreciation and amortization	100,476	93,565
General and administrative expenses	10,108	9,829
Investment management expenses	1,184	1,332
Other expenses, net	1,642	5,136
Total operating expenses	188,890	188,821
Interest income	4,523	2,726
Interest expense	(41,336)	(41,409)
(Loss) gain on dispositions of real estate	(34)	291,473
Mezzanine / Unconsolidated partnerships investment income, net	6,747	0
Income before income tax benefit (expense)	5,744	294,276
Income tax benefit (expense)	3,233	(2,981)
Net income	8,977	291,295
Noncontrolling interests:
Net income attributable to noncontrolling interests in consolidated real estate partnerships	(18)	(91)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership	(1,869)	(4,082)
Net income attributable to the company	8,959	291,204
Net income attributable to participating securities	(43)	(483)
Net income attributable to the company's common equity holders	$ 7,047	$ 286,639
Net income attributable to Aimco per common share – basic and diluted	$ 0.04	$ 1.88
Weighted average common shares/units outstanding - basic	156,660	152,303
Weighted average common shares/units outstanding - diluted	157,003	152,632
Unconsolidated Real Estate Partnerships [Member]
OPERATING EXPENSES
Mezzanine / Unconsolidated partnerships investment income, net	$ 182	$ 72
Unconsolidated Real Estate Partnerships [Member] | AIMCO Properties, LP [Member]
OPERATING EXPENSES
Mezzanine / Unconsolidated partnerships investment income, net	$ 182	$ 72