MAA Equity - Summary of Changes in Total Equity and its Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 6,125,434
Ending Balance	$ 5,994,079		5,994,079
Mid America Apartment Communities Inc. Shareholders Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	6,069,265	$ 6,186,232	6,125,434	$ 6,279,955
Net income	102,044	118,230	399,325	370,502
Other comprehensive income - derivative instruments	430	428	1,288	1,448
Issuance and registration of common shares	144	8	(805)	(789)
Shares repurchased and retired	(29)		(3,100)	(4,974)
Exercise of stock options			38
Shares issued in exchange for redeemable stock			2,109	2,069
Redeemable stock fair market value adjustment	1,189	(2,282)	2,018	(3,325)
Amortization of unearned compensation	3,620	3,539	13,296	13,869
Dividends on preferred stock	(922)	(922)	(2,766)	(2,766)
Dividends on common stock	(177,377)	(171,814)	(531,945)	(515,359)
Distributions on noncontrolling interests units	(4,457)	(4,521)	(13,563)	(13,638)
Contribution from noncontrolling interest	172	2,696	2,750	4,602
Ending Balance	5,994,079	6,131,594	5,994,079	6,131,594
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	9	9	9	9
Ending Balance	9	9	9	9
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	1,168	1,166	1,166	1,168
Issuance and registration of common shares			1	2
Shares repurchased and retired				(1)
Shares issued in exchange for common units			1	1
Shares issued in exchange for redeemable stock				(4)
Ending Balance	1,168	1,166	1,168	1,166
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	7,431,627	7,409,258	7,417,453	7,399,921
Issuance and registration of common shares	144	8	(806)	(791)
Shares repurchased and retired	(29)		(3,100)	(4,973)
Exercise of stock options			38
Shares issued in exchange for common units	391	926	6,758	3,528
Shares issued in exchange for redeemable stock			2,109	2,073
Adjustment for noncontrolling interests in Operating Partnership	(56)	(57)	(51)	47
Amortization of unearned compensation	3,620	3,539	13,296	13,869
Ending Balance	7,435,697	7,413,674	7,435,697	7,413,674
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Accumulated Distributions in Excess of Net Income [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(1,535,340)	(1,398,993)	(1,469,557)	(1,298,263)
Net income attributable to MAA	99,538	115,195	389,338	360,897
Redeemable stock fair market value adjustment	1,189	(2,282)	2,018	(3,325)
Dividends on preferred stock	(922)	(922)	(2,766)	(2,766)
Dividends on common stock	(177,377)	(171,814)	(531,945)	(515,359)
Ending Balance	(1,612,912)	(1,458,816)	(1,612,912)	(1,458,816)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Accumulated Other Comprehensive Loss [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(6,110)	(7,775)	(6,940)	(8,764)
Other comprehensive income - derivative instruments	418	416	1,248	1,405
Ending Balance	(5,692)	(7,359)	(5,692)	(7,359)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Operating Partnership [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	147,439	157,905	155,409	163,128
Net Income attributable to noncontrolling interest	2,506	3,035	9,987	9,605
Other comprehensive income - derivative instruments	12	12	40	43
Shares issued in exchange for common units	(391)	(926)	(6,759)	(3,529)
Adjustment for noncontrolling interests in Operating Partnership	56	57	51	(47)
Distributions on noncontrolling interests units	(4,457)	(4,521)	(13,563)	(13,638)
Ending Balance	145,165	155,562	145,165	155,562
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Consolidated Real Estate Entities [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	30,472	24,662	27,894	22,756
Contribution from noncontrolling interest	172	2,696	2,750	4,602
Ending Balance	$ 30,644	$ 27,358	$ 30,644	$ 27,358