Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
REVENUES
Total revenues	$ 183,500	$ 178,333	$ 364,978	$ 354,746
EXPENSES
Property operating expenses	63,787	64,758	127,023	129,375
Depreciation and amortization	78,656	75,791	163,205	151,071
General and administrative expenses	5,333	5,221	11,930	9,635
Other (income) expenses, net	(3,076)	2,515	942	5,391
Total operating expenses	144,700	148,285	303,100	295,472
Interest income	25,652	15,684	39,133	31,656
Interest expense	(26,027)	(33,657)	(48,134)	(69,682)
Loss on extinguishment of debt		(37,150)	(23,636)	(38,160)
Gain on dispositions of real estate and derecognition of leased properties	175,606	3,353	587,609	87,385
Loss from unconsolidated real estate partnerships	(873)		(2,887)
Income (loss) before income tax (expense) benefit	213,158	(21,722)	613,963	70,473
Income tax (expense) benefit			(920)	(1,045)
Net income (loss)	211,659	(19,687)	613,043	69,428
Noncontrolling interests:
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(381)	2,397	183	2,632
Net income attributable to preferred noncontrolling interests in AIR Operating Partnership	(1,602)	(1,603)	(3,205)	(3,207)
Net (income) loss attributable to common noncontrolling interests in AIR Operating Partnership	(12,749)	945	(36,916)	(3,491)
Net (income) loss attributable to noncontrolling interests	(14,732)	1,739	(39,938)	(4,066)
Net income (loss) attributable to AIR	196,927	(17,948)	573,105	65,362
Net income attributable to AIR preferred stockholders	(43)	(43)	(85)	(93)
Net income attributable to participating securities	(162)	(39)	(417)	(103)
Net income (loss) attributable to AIR common stockholders	$ 196,722	$ (18,030)	$ 572,603	$ 65,166
Earnings (loss) per common share - diluted
Net income attributable to AIR common stockholders per share - basic	$ 1.26	$ (0.12)	$ 3.66	$ 0.43
Net income attributable to AIR common stockholders per share - diluted	$ 1.26	$ (0.12)	$ 3.66	$ 0.43
Weighted average common shares/units outstanding - basic	155,927	154,608	156,327	151,609
Weighted average common shares/units outstanding - diluted	156,136	154,608	156,607	152,083
Continuing Operations [Member]
EXPENSES
Income tax (expense) benefit	$ (1,499)	$ 2,035	$ (920)	$ (1,045)
Rental And Other Property Revenues [Member]
REVENUES
Total revenues	181,012	176,721	360,273	351,451
Other Revenues [Member]
REVENUES
Total revenues	2,488	1,612	4,705	3,295
Apartment Income REIT, L.P. [Member]
REVENUES
Total revenues	183,500	178,333	364,978	354,746
EXPENSES
Property operating expenses	63,787	64,758	127,023	129,375
Depreciation and amortization	78,656	75,791	163,205	151,071
General and administrative expenses	5,333	5,221	11,930	9,635
Other (income) expenses, net	(3,076)	2,515	942	5,391
Total operating expenses	144,700	148,285	303,100	295,472
Interest income	25,652	15,684	39,133	31,656
Interest expense	(26,027)	(33,657)	(48,134)	(69,682)
Loss on extinguishment of debt		(37,150)	(23,636)	(38,160)
Gain on dispositions of real estate and derecognition of leased properties	175,606	3,353	587,609	87,385
Loss from unconsolidated real estate partnerships	(873)		(2,887)
Income (loss) before income tax (expense) benefit	213,158	(21,722)	613,963	70,473
Income tax (expense) benefit			(920)	(1,045)
Net income (loss)	211,659	(19,687)	613,043	69,428
Noncontrolling interests:
Net (income) loss attributable to noncontrolling interests in consolidated real estate partnerships	(381)	2,397	183	2,632
Net income attributable to preferred noncontrolling interests in AIR Operating Partnership	(1,645)	(1,646)	(3,290)	(3,300)
Net income (loss) attributable to AIR	211,278	(17,290)	613,226	72,060
Net income attributable to participating securities	(162)	(39)	(417)	(103)
Net income (loss) attributable to AIR common stockholders	$ 209,471	$ (18,975)	$ 609,519	$ 68,657
Earnings (loss) per common share - diluted
Net income attributable to AIR common stockholders per share - basic	$ 1.26	$ (0.12)	$ 3.66	$ 0.43
Net income attributable to AIR common stockholders per share - diluted	$ 1.26	$ (0.12)	$ 3.66	$ 0.43
Weighted average common shares/units outstanding - basic	166,023	162,698	166,434	159,701
Weighted average common shares/units outstanding - diluted	166,232	162,698	166,714	160,175
Apartment Income REIT, L.P. [Member] | Continuing Operations [Member]
EXPENSES
Income tax (expense) benefit	$ (1,499)	$ 2,035	$ (920)	$ (1,045)
Apartment Income REIT, L.P. [Member] | Rental And Other Property Revenues [Member]
REVENUES
Total revenues	181,012	176,721	360,273	351,451
Apartment Income REIT, L.P. [Member] | Other Revenues [Member]
REVENUES
Total revenues	$ 2,488	$ 1,612	$ 4,705	$ 3,295