Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 291,295	$ 95,690
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	93,565	92,548
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	(291,473)	(53,195)
Income Tax Expense (Benefit)	2,981	(34,517)
Other adjustments	3,201	284
Net changes in operating assets and operating liabilities	(17,952)	(19,487)
Net cash provided by operating activities	81,617	81,323
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(2,236)	(164,650)
Capital expenditures	(85,546)	(75,601)
Proceeds from dispositions of real estate	342,083	69,788
Purchases of corporate assets	(3,319)	(947)
Other investing activities	1,422	(218)
Net cash provided by (used in) investing activities	252,404	(171,628)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	0	360,613
Principal repayments of non-recourse property debt	(19,580)	(206,262)
Net (repayments of) borrowings on revolving credit facility	(90,360)	11,475
Repurchases of Common Stock	(20,682)	0
Payment of dividends to holders of Preferred Stock	(2,148)	(2,148)
Payment of distributions to noncontrolling interests	(5,701)	(11,902)
Payment of distributions to noncontrolling interests	(67,405)	(59,652)
Redemptions of noncontrolling interests in the Aimco Operating Partnership	(2,653)	(7,122)
Purchases and redemptions of noncontrolling interests	0	(1,219)
Other financing activities	(302)	(3,012)
Net cash (used in) provided by financing activities	(208,227)	86,795
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	125,794	(3,510)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	72,595	142,541
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	198,389	139,031
AIMCO Properties, LP [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	291,295	95,690
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	93,565	92,548
Gain (loss) on dispositions of real estate and the Asset Management business, inclusive of related income tax	(291,473)	(53,195)
Income Tax Expense (Benefit)	2,981	(34,517)
Other adjustments	3,201	284
Net changes in operating assets and operating liabilities	(17,952)	(19,487)
Net cash provided by operating activities	81,617	81,323
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(2,236)	(164,650)
Capital expenditures	(85,546)	(75,601)
Proceeds from dispositions of real estate	342,083	69,788
Purchases of corporate assets	(3,319)	(947)
Other investing activities	1,422	(218)
Net cash provided by (used in) investing activities	252,404	(171,628)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt	0	360,613
Principal repayments of non-recourse property debt	(19,580)	(206,262)
Net (repayments of) borrowings on revolving credit facility	(90,360)	11,475
Repurchases of Common Stock	(20,682)	0
Payment of dividends to holders of Preferred Stock	(4,082)	(4,085)
Payment of distributions to noncontrolling interests	0	(7,228)
Payment of distributions to General Partner and Special Limited Partner	(67,405)	(59,652)
Payment of distributions to Limited Partners	(3,767)	(2,737)
Redemptions of noncontrolling interests in the Aimco Operating Partnership	(2,653)	(7,122)
Purchases and redemptions of noncontrolling interests	0	(1,219)
Other financing activities	(302)	(3,012)
Net cash (used in) provided by financing activities	(208,227)	86,795
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	125,794	(3,510)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	72,595	142,541
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	$ 198,389	$ 139,031