Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 361,291	$ 102,846
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	185,489	190,033
Gain on dispositions of real estate	(355,783)	(53,505)
Income tax expense (benefit)	1,154	(38,824)
Other adjustments	6,443	2,307
Net changes in operating assets and operating liabilities	(28,555)	(17,231)
Net cash provided by operating activities	170,039	185,626
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(43,743)	(205,318)
Capital expenditures	(176,488)	(164,116)
Proceeds from dispositions of real estate	422,456	76,317
Purchases of corporate assets	(7,186)	(2,649)
Other investing activities	2,486	2,079
Net cash provided by (used in) investing activities	197,525	(293,687)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of non-recourse property debt	0	360,613
Principal repayments of non-recourse property debt	(207,790)	(257,144)
Net borrowings on revolving credit facility	134,600	153,010
Repurchases of Common Stock	(20,682)	0
Redemption of Preferred Stock	(125,000)	0
Payment of dividends to Common Stockholders	(125,350)	(119,288)
Payment of dividends to Preferred Stockholders	(3,247)	(4,297)
Payment of distributions to noncontrolling interests	(10,937)	(16,998)
Redemption of noncontrolling interests in the Aimco Operating Partnership	(4,244)	(7,816)
Purchases of noncontrolling interests in consolidated real estate partnerships	(917)	(3,579)
Other financing activities	(10,685)	(41)
Net cash (used in) provided by financing activities	(374,252)	104,460
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(6,688)	(3,601)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	72,595	142,541
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	65,907	138,940
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	361,291	102,846
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	185,489	190,033
Gain on dispositions of real estate	(355,783)	(53,505)
Income tax expense (benefit)	1,154	(38,824)
Other adjustments	6,443	2,307
Net changes in operating assets and operating liabilities	(28,555)	(17,231)
Net cash provided by operating activities	170,039	185,626
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(43,743)	(205,318)
Capital expenditures	(176,488)	(164,116)
Proceeds from dispositions of real estate	422,456	76,317
Purchases of corporate assets	(7,186)	(2,649)
Other investing activities	2,486	2,079
Net cash provided by (used in) investing activities	197,525	(293,687)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of non-recourse property debt	0	360,613
Principal repayments of non-recourse property debt	(207,790)	(257,144)
Net borrowings on revolving credit facility	134,600	153,010
Repurchases of Common Stock	(20,682)	0
Redemption of preferred units held by Aimco	(125,000)	0
Payment of dividends to Preferred Stockholders	(7,114)	(8,168)
Payment of distributions to General Partner and Special Limited Partner	(125,350)	(119,288)
Payment of distributions to Limited Partners	(7,014)	(5,625)
Payment of distributions to noncontrolling interests	(56)	(7,502)
Redemption of noncontrolling interests in the Aimco Operating Partnership	(4,244)	(7,816)
Purchases of noncontrolling interests in consolidated real estate partnerships	(917)	(3,581)
Other financing activities	(10,685)	(39)
Net cash (used in) provided by financing activities	(374,252)	104,460
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(6,688)	(3,601)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	72,595	142,541
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 65,907	$ 138,940