Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 613,043	$ 69,428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	163,205	151,071
Loss on extinguishment of debt	23,636	38,160
Gain on derecognition of leased properties and dispositions of real estate	(587,609)	(87,385)
Income tax expense	920	1,045
Other, net	2,939	9,314
Net changes in operating assets and operating liabilities	(14,638)	(87,836)
Net cash provided by operating activities	201,496	93,797
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(472,317)	(225,526)
Capital expenditures	(90,599)	(76,469)
Proceeds from dispositions of real asset	759,344	6,230
Proceeds from dispositions of unconsolidated real estate partnerships	7,244
Purchases of corporate assets	(6,135)	(4,509)
Proceeds from repayment of note receivable	387,088
Proceeds from investments in debt securities		100,852
Other investing activities	(9,958)	(61)
Net cash provided by (used in) investing activities	574,667	(199,483)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(353,770)	(566,523)
Proceeds from term loans		800,000
Repayment of term loan	(350,000)	(350,000)
Net (repayments of) borrowings on revolving credit facility	(154,795)	81,600
Payment of debt issuance costs	(3,990)	(9,885)
Payment of debt extinguishment costs	(22,723)	(36,198)
Proceeds from the issuance of unsecured notes payable	400,000
Proceeds from Issuance of Common Stock		342,163
Repurchases of Common Stock	(125,000)
Payment of dividends to holders of Common Stock	(141,104)	(131,654)
Payment of distributions to preferred noncontrolling interests	(3,221)	(3,209)
Payment of distributions to common noncontrolling interests	(16,306)	(12,092)
Redemptions of noncontrolling interests in the AIR Operating Partnership	(4,269)	(3,622)
Contributions from noncontrolling interests in consolidated real estate partnerships	7,808	1,998
Other financing activities	(663)	329
Net cash used in financing activities	(768,033)	112,907
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	8,130	7,221
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	92,761	73,480
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	100,891	80,701
Apartment Income REIT, L.P [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	613,043	69,428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	163,205	151,071
Loss on extinguishment of debt	23,636	38,160
Gain on derecognition of leased properties and dispositions of real estate	(587,609)	(87,385)
Income tax expense	920	1,045
Other, net	2,939	9,314
Net changes in operating assets and operating liabilities	(14,638)	(87,836)
Net cash provided by operating activities	201,496	93,797
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(472,317)	(225,526)
Capital expenditures	(90,599)	(76,469)
Proceeds from dispositions of real asset	759,344	6,230
Proceeds from dispositions of unconsolidated real estate partnerships	7,244
Purchases of corporate assets	(6,135)	(4,509)
Proceeds from repayment of note receivable	387,088
Proceeds from investments in debt securities		100,852
Other investing activities	(9,958)	(61)
Net cash provided by (used in) investing activities	574,667	(199,483)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(353,770)	(566,523)
Proceeds from term loans		800,000
Repayment of term loan	(350,000)	(350,000)
Net (repayments of) borrowings on revolving credit facility	(154,795)	81,600
Payment of debt issuance costs	(3,990)	(9,885)
Payment of debt extinguishment costs	(22,723)	(36,198)
Proceeds from the issuance of unsecured notes payable	400,000
Proceeds from issuance of common partnership units to AIR, net		342,163
Repurchases of Common Stock	(125,000)
Payment of distributions to preferred units	(3,221)	(3,300)
Payment of distributions General Partner and Special Limited Partner	(141,104)	(131,654)
Payment of distributions to Limited Partners	(8,970)	(7,258)
Payment of distributions to noncontrolling interests	(7,336)	(4,836)
Redemption of common and preferred units	(4,269)	(3,622)
Contributions from noncontrolling interests in consolidated real estate partnerships	7,808	1,998
Other financing activities	(663)	422
Net cash used in financing activities	(768,033)	112,907
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	8,130	7,221
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	92,761	73,480
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	$ 100,891	$ 80,701