Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 102,846	$ 38,746
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	190,033	176,323
Gain on dispositions of real estate, inclusive of related income tax	(50,546)	(1,114)
Income Tax Expense (Benefit)	(41,783)	(10,008)
Other adjustments	2,307	4,706
Net changes in operating assets and operating liabilities	(17,231)	(31,147)
Net cash provided by operating activities	185,626	177,506
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(205,318)	(8,189)
Capital expenditures	(164,116)	(176,388)
Proceeds from dispositions of real estate	76,317	10,915
Purchases of corporate assets	(2,649)	(6,005)
Other investing activities	2,079	733
Net cash used in investing activities	(293,687)	(178,934)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613	68,535
Principal repayments on non-recourse property debt	(257,144)	(91,420)
Proceeds from term loan	0	250,000
Net borrowings on revolving credit facility	153,010	227,790
Payment of dividends to holders of preferred securities	(4,297)	(4,297)
Payment of dividends to holders of Common Stock	(119,288)	(112,661)
Payment of distributions to noncontrolling interests	(16,998)	(11,176)
Purchases and redemptions of noncontrolling interests	(11,395)	(323,165)
Other financing activities	(41)	53
Net cash provided by financing activities	104,460	3,659
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(3,601)	2,231
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541	131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	138,940	133,381
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	102,846	38,746
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	190,033	176,323
Gain on dispositions of real estate, inclusive of related income tax	(50,546)	(1,114)
Income Tax Expense (Benefit)	(41,783)	(10,008)
Other adjustments	2,307	4,706
Net changes in operating assets and operating liabilities	(17,231)	(31,147)
Net cash provided by operating activities	185,626	177,506
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(205,318)	(8,189)
Capital expenditures	(164,116)	(176,388)
Proceeds from dispositions of real estate	76,317	10,915
Purchases of corporate assets	(2,649)	(6,005)
Other investing activities	2,079	733
Net cash used in investing activities	(293,687)	(178,934)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	360,613	68,535
Principal repayments on non-recourse property debt	(257,144)	(91,420)
Proceeds from term loan	0	250,000
Net borrowings on revolving credit facility	153,010	227,790
Payment of dividends to holders of preferred securities	(8,168)	(8,185)
Payment of distributions to General Partner and Special Limited Partner	(119,288)	(112,661)
Payment of distributions to Limited Partners	(5,625)	(5,408)
Payment of distributions to noncontrolling interests	(7,502)	(1,880)
Purchases and redemptions of noncontrolling interests	(3,581)	(311,055)
Other financing activities	(7,855)	(12,057)
Net cash provided by financing activities	104,460	3,659
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(3,601)	2,231
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	142,541	131,150
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 138,940	$ 133,381