Earnings Per OP Unit of MAALP - Schedule of Diluted Earnings per Common Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022
Earnings Per Share Disclosure [Line Items]
Net income	$ 139,574		$ 113,577
Net loss attributable to noncontrolling interests	(3,664)		(2,775)
Distributions to MAALP Series I preferred unitholders	(922)		(922)
Income from continuing operations available for common shareholders, adjusted	134,928		109,801
Net income available for MAA common shareholders, adjusted	$ 134,988		$ 109,880
Effect of dilutive securities	220		459
Weighted average common shares - diluted	116,402		115,718
Limited Partnership [Member]
Earnings Per Share Disclosure [Line Items]
Net income	$ 139,574		$ 113,577
Net loss attributable to noncontrolling interests	0	$ 0	293
Income from continuing operations allocated to unvested restricted shares	(60)		(79)
Distributions to MAALP Series I preferred unitholders	(922)		(922)
Net income available for MAALP common unitholders, adjusted	$ 138,592		$ 112,869
Weighted average common units - basic	119,340		118,462
Earnings per common unit - basic	$ 1.16		$ 0.95
Net income available for MAALP common unitholders, adjusted	$ 138,652		$ 112,948
Effect of dilutive securities	220		459
Weighted average common shares - diluted	119,560		118,921
Earnings per common unit - diluted	$ 1.16		$ 0.95