Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
REVENUES
Rental and other property revenues	$ 230,235	$ 225,393
Tax credit and transaction revenues	0	22,327
Total revenues	230,235	247,720
OPERATING EXPENSES
Property operating expenses	79,184	78,287
Direct Costs of Leased and Rented Property or Equipment - Asset Management	0	9,195
Depreciation and amortization	93,565	92,548
General and administrative expenses	10,369	11,355
Other expenses, net	5,703	2,958
Total operating expenses	188,821	194,343
Interest income	2,726	2,172
Interest expense	(41,409)	(47,795)
Other, net	72	224
Income before income tax (expense) benefit	294,276	61,173
Income tax (expense) benefit	(2,981)	34,517
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	291,473	53,195
Net income	291,295	95,690
Noncontrolling interests:
Net income attributable to noncontrolling interests in consolidated real estate partnerships	(91)	(6,206)
Net income attributable to preferred noncontrolling interests in Aimco Operating Partnership	(1,934)	(1,937)
Net income attributable to common noncontrolling interests in Aimco Operating Partnership	(15,137)	(3,755)
Net income attributable to noncontrolling interests	(17,162)	(11,898)
Net income attributable to the company	274,133	83,792
Net income attributable to the company's preferred equity holders	(2,148)	(2,148)
Net income attributable to participating securities	(417)	(119)
Net income attributable to the company's common equity holders	$ 271,568	$ 81,525
Earnings attributable to the company per common share/unit
Net income attributable to the company per common share/unit - basic and diluted (in dollars per share/unit)	$ 1.88	$ 0.54
Weighted average number of shares outstanding - basic	144,232	151,872
Weighted average number of shares outstanding - diluted	144,445	152,000
Gain (Loss) on Sale of Properties, before Applicable Income Taxes	$ 291,473	$ 53,195
AIMCO Properties, LP [Member]
REVENUES
Rental and other property revenues	230,235	225,393
Tax credit and transaction revenues	0	22,327
Total revenues	230,235	247,720
OPERATING EXPENSES
Property operating expenses	79,184	78,287
Direct Costs of Leased and Rented Property or Equipment - Asset Management	0	9,195
Depreciation and amortization	93,565	92,548
General and administrative expenses	10,369	11,355
Other expenses, net	5,703	2,958
Total operating expenses	188,821	194,343
Interest income	2,726	2,172
Interest expense	(41,409)	(47,795)
Other, net	72	224
Income before income tax (expense) benefit	294,276	61,173
Income tax (expense) benefit	(2,981)	34,517
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	291,473	53,195
Net income	291,295	95,690
Noncontrolling interests:
Net income attributable to noncontrolling interests in consolidated real estate partnerships	(91)	(6,206)
Net income attributable to the company	291,204	89,484
Net income attributable to the company's preferred equity holders	(4,082)	(4,085)
Net income attributable to participating securities	(483)	(125)
Net income attributable to the company's common equity holders	$ 286,639	$ 85,274
Earnings attributable to the company per common share/unit
Net income attributable to the company per common share/unit - basic and diluted (in dollars per share/unit)	$ 1.88	$ 0.54
Weighted average number of shares outstanding - basic	152,303	158,875
Weighted average number of shares outstanding - diluted	152,632	159,006