Earnings Per Common Share of MAA - Schedule of Computation of Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share Disclosure [Line Items]
Net income		$ 102,044	$ 118,230	$ 399,325	$ 370,502
Net income attributable to noncontrolling interests		(2,506)	(3,035)	(9,987)	(9,605)
Unvested restricted shares (allocation of earnings)		(52)	(53)	(208)	(163)
Dividends to MAA Series I preferred shareholders		(922)	(922)	(2,766)	(2,766)
Net income available for MAA common shareholders, adjusted		$ 98,564	$ 114,220	$ 386,364	$ 357,968
Weighted average common shares - basic		117,012	116,820	116,943	116,758
Earnings per common share - basic		$ 0.84	$ 0.98	$ 3.3	$ 3.07
Net income attributable to noncontrolling interests	[1]	$ (2,506)	$ (3,035)	$ (9,987)	$ (9,605)
Unvested restricted shares (allocation of earnings)		0	(53)	0	(163)
Dividends to MAA Series I preferred shareholders		(922)	(922)	(2,766)	(2,766)
Net income available for MAA common shareholders, adjusted		$ 98,616	$ 114,220	$ 386,572	$ 357,968
Weighted average common shares - diluted		117,155	116,820	117,161	116,758
Effect of dilutive securities		143	0	218	0
Earnings per common share - diluted		$ 0.84	$ 0.98	$ 3.3	$ 3.07
Limited Partnership Units [Member]
Earnings Per Share Disclosure [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		2,900	3,100	3,000	3,100

[1] For the three and nine months ended September 30, 2025, 2.9 million OP Units and 3.0 million OP Units, respectively, and their related income are not included in the diluted earnings per share calculations as they are not dilutive. For the three and nine months ended September 30, 2024, 3.1 million OP Units and their related income are not included in the diluted earnings per share calculations as they are not dilutive.