Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 8,977	$ 291,295
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	100,476	93,565
Loss (gain) on dispositions of real estate	34	(291,473)
Income tax (benefit) expense	(3,233)	2,981
Other adjustments	3,157	3,201
Net changes in operating assets and operating liabilities	(31,995)	(17,952)
Net cash provided by operating activities	77,416	81,617
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(2,733)	(2,236)
Capital expenditures	(94,842)	(85,546)
Proceeds from dispositions of real estate	0	342,083
Purchases of corporate assets	(5,104)	(3,319)
Other investing activities	4,665	1,422
Net cash (used in) provided by investing activities	(98,014)	252,404
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(22,622)	(19,580)
Net borrowings on (repayments of) revolving credit facility	318,845	(90,360)
Repurchases of Common Stock	(10,004)	(20,682)
Payment of dividends to holders of Preferred Stock	0	(2,148)
Payment of dividends to holders of Common Stock	(61,116)	(67,405)
Payment of distributions to noncontrolling interests	(5,442)	(5,701)
Redemptions of noncontrolling interests in the Aimco Operating Partnership	(1,584)	(2,653)
Other financing activities	(365)	302
Net cash provided by (used in) financing activities	217,712	(208,227)
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	197,114	125,794
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	177,702	72,595
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	374,816	198,389
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	8,977	291,295
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	100,476	93,565
Loss (gain) on dispositions of real estate	34	(291,473)
Income tax (benefit) expense	(3,233)	2,981
Other adjustments	3,157	3,201
Net changes in operating assets and operating liabilities	(31,995)	(17,952)
Net cash provided by operating activities	77,416	81,617
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(2,733)	(2,236)
Capital expenditures	(94,842)	(85,546)
Proceeds from dispositions of real estate	0	342,083
Purchases of corporate assets	(5,104)	(3,319)
Other investing activities	4,665	1,422
Net cash (used in) provided by investing activities	(98,014)	252,404
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(22,622)	(19,580)
Net borrowings on (repayments of) revolving credit facility	318,845	(90,360)
Repurchases of Common Stock	(10,004)	(20,682)
Payment of distributions to General Partner and Special Limited Partner	(61,116)	(67,405)
Payment of distributions to Limited Partners	(3,492)	(3,767)
Payment of dividends to holders of Preferred Stock	(1,869)	(4,082)
Payment of distributions to noncontrolling interests	(81)	0
Redemption of common and preferred units	(1,584)	(2,653)
Other financing activities	(365)	302
Net cash provided by (used in) financing activities	217,712	(208,227)
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	197,114	125,794
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	177,702	72,595
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 374,816	$ 198,389