Shareholders' Equity of MAA - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Jan. 31, 2023	Aug. 31, 2021	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Equity [Line Items]
Common stock, shares outstanding			116,676,966	115,438,832	116,676,966	115,438,832	115,480,336
Total common shares and operating partnership units outstanding			119,831,650	118,641,209	119,831,650	118,641,209
Settled share amount	$ 1.1
Forward price per share	$ 185.23
Net proceeds	$ 203.7
Equity Forward Sale Agreements [Member]
Equity [Line Items]
Stock Issued During Period, Shares, New Issues		1,100,000
Common stock, price per share		$ 190.56
Common shares attributable to dilutive effect of equity forward agreements						62,000
At The Market Offering [Member]
Equity [Line Items]
Common stock shares sold			0	0	0	0
Remaining common stock to be issued					4,000,000
Maximum [Member] | At The Market Offering [Member]
Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			4,000,000		4,000,000
Noncontrolling Interest [Member]
Equity [Line Items]
Common Shares Issuable Upon Conversion Of Convertible Stock			3,154,684	3,202,377	3,154,684	3,202,377