CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ (157,319)	$ 92,158	$ (4,980)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	68,834	158,967	84,712
Realized and unrealized (gains) losses on interest rate options	(1,119)	(48,205)	(6,509)
Realized and unrealized (gains) losses on equity investments	(700)	(20,302)	(6,585)
Income tax expense (benefit)	(12,752)	17,264	(13,570)
Share-based compensation	9,221	7,471	5,271
Loss on extinguishment of debt, net	938	28,986
Lease modification income		(206,963)
Gain on dispositions of real estate	(7,984)	(175,863)
Amortization of debt issuance costs and other	2,563	2,787	1,384
Changes in operating assets and operating liabilities:
Other assets, net	335	1,039	(11,826)
Net cash received from lease incentive		195,789
Accrued liabilities and other	(6,489)	(27,556)	(3,902)
Total adjustments	207,786	112,074	17,566
Net cash provided by operating activities	50,467	204,232	12,586
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate	(4,108)	(129,245)	(69,601)
Capital expenditures	(272,497)	(237,523)	(177,809)
Proceeds from disposition of real estate	9,254	259,983
Investment in IQHQ		(14,227)	(23,273)
Redemption of IQHQ investment		16,473
Distributions received from unconsolidated real estate partnerships	4,209
Investment in unconsolidated real estate partnerships	(3,786)	(15,668)
Purchase of treasury bill	(53,773)
Proceeds from treasury bill	54,727
Other investing activities	5,578	(547)	(727)
Net cash used in investing activities	(260,396)	(120,754)	(271,410)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt		756,220	59,757
Proceeds from construction loans	174,445	93,206	165,170
Proceeds from sale of participation in Mezzanine Investment	37,500
Payments of deferred loan costs	(229)	(15,266)	(6,437)
Principal repayments on non-recourse property debt	(85,974)	(302,428)	(24,383)
Principal repayments on construction loans		(138,404)
Principal repayments on Notes Payable to AIR		(534,127)
Purchase of interest rate options	(712)	(5,620)	(5,905)
Proceeds from interest rate options	58,906	16,818
Payments on finance leases	(2,694)	(26,213)	(10,855)
Payments of prepayment premiums		(25,801)
Common stock repurchased	(46,843)	(23,492)
Dividends paid on common stock		(3,043)
Redemption of redeemable noncontrolling interests		(5,094)
Distributions to redeemable noncontrolling interests	(9,243)	(9,365)
Contributions from noncontrolling interests	272	10,616	212
Distributions to noncontrolling interests	(1,291)	(1,362)	(1,157)
Contributions from redeemable noncontrolling interests	125	122,571	29,440
Redemption of OP Units	(1,081)	(225)	(76)
Redemption of noncontrolling interest in real estate partnership		(7,088)
Other financing activities	(3,751)	(197)	(1,095)
Net cash provided by (used in) financing activities	119,430	(98,294)	204,671
NET DECREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(90,499)	(14,816)	(54,153)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	229,766	244,582	298,735
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF YEAR	139,267	229,766	244,582
Aimco OP L.P. [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	(157,319)	92,158	(4,980)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	68,834	158,967	84,712
Realized and unrealized (gains) losses on interest rate options	(1,119)	(48,205)	(6,509)
Realized and unrealized (gains) losses on equity investments	(700)	(20,302)	(6,585)
Income tax expense (benefit)	(12,752)	17,264	(13,570)
Share-based compensation	9,221	7,471	5,271
Loss on extinguishment of debt, net	938	28,986
Lease modification income		(206,963)
Gain on dispositions of real estate	(7,984)	(175,863)
Amortization of debt issuance costs and other	2,563	2,787	1,384
Changes in operating assets and operating liabilities:
Other assets, net	335	1,039	(11,826)
Net cash received from lease incentive		195,789
Accrued liabilities and other	(6,489)	(27,556)	(3,902)
Total adjustments	207,786	112,074	17,566
Net cash provided by operating activities	50,467	204,232	12,586
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate	(4,108)	(129,245)	(69,601)
Capital expenditures	(272,497)	(237,523)	(177,809)
Proceeds from disposition of real estate	9,254	259,983
Investment in IQHQ		(14,227)	(23,273)
Redemption of IQHQ investment		16,473
Distributions received from unconsolidated real estate partnerships	4,209
Investment in unconsolidated real estate partnerships	(3,786)	(15,668)
Purchase of treasury bill	(53,773)
Proceeds from treasury bill	54,727
Other investing activities	5,578	(547)	(727)
Net cash used in investing activities	(260,396)	(120,754)	(271,410)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from non-recourse property debt		756,220	59,757
Proceeds from construction loans	174,445	93,206	165,170
Payments of deferred loan costs	(229)	(15,266)	(6,437)
Principal repayments on non-recourse property debt	(85,974)	(302,428)	(24,383)
Principal repayments on construction loans		(138,404)
Principal repayments on Notes Payable to AIR		(534,127)
Purchase of interest rate options	(712)	(5,620)	(5,905)
Proceeds from interest rate options	58,906	16,818
Payments on finance leases	(2,694)	(26,213)	(10,855)
Payments of prepayment premiums		(25,801)
Common stock repurchased	(46,843)	(23,492)
Dividends paid on common stock		(3,043)
Redemption of redeemable noncontrolling interests		(5,094)
Distributions to redeemable noncontrolling interests	(9,243)	(9,365)
Contributions from noncontrolling interests	272	10,616	212
Distributions to noncontrolling interests	(1,291)	(1,362)	(1,157)
Contributions from redeemable noncontrolling interests	125	122,571	29,440
Redemption of OP Units	(1,081)	(225)	(76)
Redemption of noncontrolling interest in real estate partnership		(7,088)
Other financing activities	(3,751)	(197)	(1,095)
Net cash provided by (used in) financing activities	119,430	(98,294)	204,671
NET DECREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(90,499)	(14,816)	(54,153)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF YEAR	229,766	244,582	298,735
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF YEAR	139,267	229,766	244,582
Unconsolidated Real Estate Partnerships [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Income from unconsolidated real estate partnerships	(875)	(579)	(973)
Unconsolidated Real Estate Partnerships [Member] | Aimco OP L.P. [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Income from unconsolidated real estate partnerships	(875)	(579)	(973)
Mezzanine Investment [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Income from unconsolidated real estate partnerships	155,814	179,239	(30,436)
Mezzanine Investment [Member] | Aimco OP L.P. [Member]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Income from unconsolidated real estate partnerships	155,814	$ 179,239	$ (30,436)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from sale of participation in Mezzanine Investment	$ 37,500