Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 616,439	$ 80,099
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	253,650	232,192
Loss on extinguishment of debt	23,636	44,833
Gain on dispositions of real estate and derecognition of leased properties	(587,609)	(94,512)
Income tax expense	966	770
Other, net	6,890	10,645
Net changes in operating assets and operating liabilities	37,484	(41,286)
Net cash provided by operating activities	351,456	232,741
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(858,815)	(225,526)
Capital expenditures	(151,115)	(130,877)
Proceeds from dispositions of real asset	759,227	45,752
Proceeds from dispositions of unconsolidated real estate partnerships	7,244	0
Proceeds from repayment of note receivable	534,127	0
Proceeds from investments in debt securities	0	100,852
Other investing activities	(37,744)	(40,792)
Net cash provided by (used in) investing activities	252,924	(250,591)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(361,056)	(618,111)
Proceeds from term loans	0	1,150,000
Repayment of term loan	(350,000)	(350,000)
Net borrowings on (repayments of) revolving credit facility	176,205	(206,144)
Payment of debt issuance costs	(4,793)	(11,124)
Payment of debt extinguishment costs	(22,723)	(42,760)
Proceeds from the issuance of unsecured notes payable	400,000	0
Proceeds from Issuance of Common Stock	0	342,132
Repurchases of Common Stock	(171,711)	0
Payment of dividends to holders of Common Stock	(210,377)	(200,624)
Other financing activities	(38,040)	(21,872)
Net cash (used in) provided by financing activities	(582,495)	41,497
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	21,885	23,647
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	92,761	73,480
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	114,646	97,127
Apartment Income REIT, L.P [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	616,439	80,099
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	253,650	232,192
Loss on extinguishment of debt	23,636	44,833
Gain on dispositions of real estate and derecognition of leased properties	(587,609)	(94,512)
Income tax expense	966	770
Other, net	6,890	10,645
Net changes in operating assets and operating liabilities	37,484	(41,286)
Net cash provided by operating activities	351,456	232,741
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of real estate and deposits related to purchases of real estate	(858,815)	(225,526)
Capital expenditures	(151,115)	(130,877)
Proceeds from dispositions of real asset	759,227	45,752
Proceeds from dispositions of unconsolidated real estate partnerships	7,244	0
Proceeds from repayment of note receivable	534,127	0
Proceeds from investments in debt securities	0	100,852
Other investing activities	(37,744)	(40,792)
Net cash provided by (used in) investing activities	252,924	(250,591)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal repayments on non-recourse property debt	(361,056)	(618,111)
Proceeds from term loans	0	1,150,000
Repayment of term loan	(350,000)	(350,000)
Net borrowings on (repayments of) revolving credit facility	176,205	(206,144)
Payment of debt issuance costs	(4,793)	(11,124)
Payment of debt extinguishment costs	(22,723)	(42,760)
Proceeds from the issuance of unsecured notes payable	400,000	0
Proceeds from issuance of common partnership units to AIR, net	0	342,132
Repurchases of Common Stock	(171,711)	0
Payment of distributions General Partner and Special Limited Partner	(210,377)	(200,624)
Other financing activities	(38,040)	(21,872)
Net cash (used in) provided by financing activities	(582,495)	41,497
NET INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	21,885	23,647
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	92,761	73,480
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	$ 114,646	$ 97,127