Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 52,181	$ 361,291
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	198,165	185,489
Gain on dispositions of real estate	(47,204)	(355,783)
Income tax (benefit) expense	(6,112)	1,154
Other adjustments	7,411	6,443
Net changes in operating assets and operating liabilities	(20,084)	(28,555)
Net cash provided by operating activities	184,357	170,039
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(7,794)	(43,743)
Capital expenditures	(182,348)	(176,488)
Proceeds from dispositions of real estate	36,869	422,456
Purchases of corporate assets	(8,743)	(7,186)
Other investing activities	1,946	2,486
Net cash (used in) provided by investing activities	(160,070)	197,525
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	608,756	0
Principal repayments on non-recourse property debt	(274,347)	(207,790)
Proceeds from term loan	350,000	0
Net (repayments of) borrowings on revolving credit facility	(275,000)	134,600
Repurchases of common stock or common units	(10,004)	(20,682)
Repurchases of preferred stock or preferred units	0	(125,000)
Payment of dividends to holders of Common Stock	(122,058)	(125,350)
Payment of dividends to holders of Preferred Stock	0	(3,247)
Payment of distributions to noncontrolling interests	(10,639)	(10,937)
Redemptions of noncontrolling interests in the Aimco Operating Partnership	(1,870)	(4,244)
Purchases of noncontrolling interests in consolidated real estate partnerships	0	(917)
Other financing activities	(24,319)	(10,685)
Net cash provided by (used in) financing activities	240,519	(374,252)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	264,806	(6,688)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	177,702	72,595
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	442,508	65,907
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	52,181	361,291
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	198,165	185,489
Gain on dispositions of real estate	(47,204)	(355,783)
Income tax (benefit) expense	(6,112)	1,154
Other adjustments	7,411	6,443
Net changes in operating assets and operating liabilities	(20,084)	(28,555)
Net cash provided by operating activities	184,357	170,039
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(7,794)	(43,743)
Capital expenditures	(182,348)	(176,488)
Proceeds from dispositions of real estate	36,869	422,456
Purchases of corporate assets	(8,743)	(7,186)
Other investing activities	1,946	2,486
Net cash (used in) provided by investing activities	(160,070)	197,525
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	608,756	0
Principal repayments on non-recourse property debt	(274,347)	(207,790)
Proceeds from term loan	350,000	0
Net (repayments of) borrowings on revolving credit facility	(275,000)	134,600
Repurchases of common stock or common units	(10,004)	(20,682)
Repurchases of preferred stock or preferred units	0	(125,000)
Payment of distributions to General Partner and Special Limited Partner	(122,058)	(125,350)
Payment of distributions to Limited Partners	(6,793)	(7,014)
Payment of dividends to holders of Preferred Stock	(3,728)	(7,114)
Payment of distributions to noncontrolling interests	(118)	(56)
Redemption of common and preferred units	(1,870)	(4,244)
Purchases of noncontrolling interests in consolidated real estate partnerships	0	(917)
Other financing activities	(24,319)	(10,685)
Net cash provided by (used in) financing activities	240,519	(374,252)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	264,806	(6,688)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	177,702	72,595
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	$ 442,508	$ 65,907