Condensed Consolidated Statements of Partners' Capital - USD ($) $ in Thousands	Total	Apartment Income REIT, L.P.	Apartment Income REIT, L.P. Preferred Units	Apartment Income REIT, L.P. General Partner and Special Limited Partner	Apartment Income REIT, L.P. Limited Partners	Apartment Income REIT, L.P. Partners' Capital Attributable to the AIR Operating Partnership	Apartment Income REIT, L.P. Noncontrolling Interests in Consolidated Real Estate Partnerships
Beginning balance at Dec. 31, 2021		$ 1,939,155	$ 2,129	$ 1,810,896	$ 197,013	$ 2,010,038	$ (70,883)
Increase (Decrease) in Partners' Capital [Roll Forward]
Redemption of common partnership units		(4,245)			(4,245)	(4,245)
Repurchase of common partnership units		(125,000)		(125,000)		(125,000)
Amortization of share-based compensation cost		4,451		2,641	1,810	4,451
Effect of changes in ownership of consolidated entities	$ 0			(3,264)	3,264
Contributions from noncontrolling interests in consolidated real estate partnerships	7,808	7,808					7,808
Change in accumulated other comprehensive income (loss)	14,921	14,921		13,750	1,171	14,921
Net (loss) income	609,838	609,838		573,105	36,916	610,021	(183)
Distributions to common unitholders		(140,984)		(140,984)	0	(140,984)
Distributions to noncontrolling interests	(16,271)	(16,271)			(8,936)	(8,936)	(7,335)
Other, net		(848)	(129)	(695)	(8)	(832)	(16)
Ending balance at Jun. 30, 2022		2,288,825	2,000	2,130,449	226,985	2,359,434	(70,609)
Beginning balance at Mar. 31, 2022		2,263,838	2,000	2,115,168	216,827	2,333,995	(70,157)
Increase (Decrease) in Partners' Capital [Roll Forward]
Redemption of common partnership units		(793)			(793)	(793)
Repurchase of common partnership units		(125,000)		(125,000)		(125,000)
Amortization of share-based compensation cost		1,701		751	950	1,701
Effect of changes in ownership of consolidated entities	0			(578)	578
Contributions from noncontrolling interests in consolidated real estate partnerships	3,483	3,483					3,483
Change in accumulated other comprehensive income (loss)	15,704	15,704		14,533	1,171	15,704
Net (loss) income	210,057	210,057		196,927	12,749	209,676	381
Distributions to common unitholders		(70,556)		(70,556)	0	(70,556)
Distributions to noncontrolling interests	(8,677)	(8,677)			(4,489)	(4,489)	(4,188)
Other, net		(932)		(796)	(8)	(804)	(128)
Ending balance at Jun. 30, 2022		2,288,825	2,000	2,130,449	226,985	2,359,434	(70,609)
Beginning balance at Dec. 31, 2022		2,319,306	2,000	2,154,417	241,674	2,398,091	(78,785)
Increase (Decrease) in Partners' Capital [Roll Forward]
Issuance of AIR Operating Partnership units	22,383	22,383			22,383	22,383
Redemption of common partnership units		(15,814)			(15,814)	(15,814)
Amortization of share-based compensation cost		5,101		2,791	2,310	5,101
Effect of changes in ownership of consolidated entities	0			(9,286)	9,286
Purchase of noncontrolling interests in consolidated real estate partnerships		(1,517)		479		479	(1,996)
Contributions from noncontrolling interests in consolidated real estate partnerships	4,517	4,517					4,517
Change in accumulated other comprehensive income (loss)	(4,327)	(4,327)		(4,219)	(108)	(4,327)
Net (loss) income	(12,490)	(12,490)		(12,718)	(1,141)	(13,859)	1,369
Distributions to common unitholders		(143,218)		(134,140)	(9,078)	(143,218)
Distributions to noncontrolling interests	(14,135)	(5,057)			0	0	(5,057)
Other, net		6		141		141	(135)
Ending balance at Jun. 30, 2023		2,168,890	2,000	1,997,465	249,512	2,248,977	(80,087)
Beginning balance at Mar. 31, 2023		2,234,902	2,000	2,057,615	254,304	2,313,919	(79,017)
Increase (Decrease) in Partners' Capital [Roll Forward]
Redemption of common partnership units		(5,285)			(5,285)	(5,285)
Amortization of share-based compensation cost		1,975		820	1,155	1,975
Effect of changes in ownership of consolidated entities	0			(3,184)	3,184
Purchase of noncontrolling interests in consolidated real estate partnerships		(1,517)		479		479	(1,996)
Contributions from noncontrolling interests in consolidated real estate partnerships	2,950	2,950					2,950
Change in accumulated other comprehensive income (loss)	11,267	11,267		10,273	994	11,267
Net (loss) income	(972)	(972)		(1,341)	(315)	(1,656)	684
Distributions to common unitholders		(71,727)		(67,201)	(4,526)	(71,727)
Distributions to noncontrolling interests	$ (7,098)	(2,572)					(2,572)
Other, net		(131)		4	1	5	(136)
Ending balance at Jun. 30, 2023		$ 2,168,890	$ 2,000	$ 1,997,465	$ 249,512	$ 2,248,977	$ (80,087)