Significant Transactions (Details Textual) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended	9 Months Ended	10 Months Ended
	Sep. 01, 2022 USD ($)	Nov. 02, 2022 USD ($) shares	Sep. 30, 2022 USD ($) Segment Property $ / shares shares	Sep. 30, 2022 USD ($) Segment Property	Nov. 02, 2022 $ / shares shares	Aug. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) Multi_family_apartment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of Real Estate Properties | Property			80	80
Number of apartment homes in apartment communities | Multi_family_apartment							1,748
Number Of Units In Real Estate Property Held For Sale | Segment			1,314	1,314
Payment to acquire additional Properties	$ 200,000
Leased Real Estate Assets			$ 0	$ 0		$ 466,000	$ 466,355
Repurchases of Common Stock			(46,711)	(171,711)
Apartment Income REIT, L.P. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Leased Real Estate Assets			$ 0	$ 0			$ 466,355
Capital Allocation - Share Repurchases [Member] | Apartment Income REIT, L.P. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Repurchases of Common Stock (in shares) | shares			(1,200,000)		(7,200,000)
Repurchases of Common Stock			$ (47,000)
Share repurchase average price, per share | $ / shares			$ 39.07		$ 39.96
Capital Allocation - Share Repurchases [Member] | Apartment Income REIT, L.P. [Member] | Board of Directors Chairman [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Remaining Number of Shares Authorized to be Repurchased | shares		213,000,000			213,000,000
Subsequent Event [Member] | Capital Allocation - Share Repurchases [Member] | Apartment Income REIT, L.P. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Repurchases of Common Stock (in shares) | shares		(3,100,000)
Repurchases of Common Stock		$ (115,000)
Apartment Community [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number Of Homes In Real Estate Property Sold | Segment				2,050
Proceeds from Sale of Real Estate				$ 781,100
Apartment Communities Sold | Segment			0
South Florida [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Apartment Communities Purchased | Property				3
Washington, D.C. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Apartment Communities Purchased | Property				1