MAA Equity - Summary of Changes in Total Equity and its Components (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 6,125,434
Ending Balance	$ 6,069,265		6,069,265
Mid America Apartment Communities Inc. Shareholders Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	6,133,470	$ 6,257,390	6,125,434	$ 6,279,955
Net income	110,875	104,662	297,281	252,272
Other comprehensive income - derivative instruments	429	503	858	1,020
Issuance and registration of common shares	(1,106)	(890)	(949)	(797)
Shares repurchased and retired	(1,769)	(4,132)	(3,071)	(4,974)
Exercise of stock options			38
Shares issued in exchange for redeemable stock	2,109	2,069	2,109	2,069
Redeemable stock fair market value adjustment	2,724	(1,445)	829	(1,043)
Amortization of unearned compensation	3,815	3,805	9,676	10,330
Dividends on preferred stock	(922)	(922)	(1,844)	(1,844)
Dividends on common stock	(177,411)	(171,925)	(354,568)	(343,545)
Distributions on noncontrolling interests units	(4,469)	(4,513)	(9,106)	(9,117)
Contribution from noncontrolling interest	1,520	1,630	2,578	1,906
Ending Balance	6,069,265	6,186,232	6,069,265	6,186,232
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	1,166	1,168	1,166	1,168
Issuance and registration of common shares	1	2	1	2
Shares repurchased and retired		(1)		(1)
Shares issued in exchange for common units	1	1	1	1
Shares issued in exchange for redeemable stock		(4)		(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	7,422,913	7,406,189	7,417,453	7,399,921
Issuance and registration of common shares	(1,107)	(892)	(950)	(799)
Shares repurchased and retired	(1,769)	(4,131)	(3,071)	(4,973)
Exercise of stock options			38
Shares issued in exchange for common units	5,608	2,008	6,367	2,602
Shares issued in exchange for redeemable stock	2,109	2,073	2,109	2,073
Adjustment for noncontrolling interests in Operating Partnership	58	206	5	104
Amortization of unearned compensation	3,815	3,805	9,676	10,330
Ending Balance	7,431,627	7,409,258	7,431,627	7,409,258
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	(1,467,858)	(1,326,654)	(1,469,557)	(1,298,263)
Net income attributable to MAA	108,127	101,953	289,800	245,702
Redeemable stock fair market value adjustment	2,724	(1,445)	829	(1,043)
Dividends on preferred stock	(922)	(922)	(1,844)	(1,844)
Dividends on common stock	(177,411)	(171,925)	(354,568)	(343,545)
Ending Balance	(1,535,340)	(1,398,993)	(1,535,340)	(1,398,993)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Accumulated Other Comprehensive Loss [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(6,522)	(8,263)	(6,940)	(8,764)
Other comprehensive income - derivative instruments	412	488	830	989
Ending Balance	(6,110)	(7,775)	(6,110)	(7,775)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Operating Partnership [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	154,810	161,909	155,409	163,128
Net Income attributable to noncontrolling interest	2,748	2,709	7,481	6,570
Other comprehensive income - derivative instruments	17	15	28	31
Shares issued in exchange for common units	(5,609)	(2,009)	(6,368)	(2,603)
Adjustment for noncontrolling interests in Operating Partnership	(58)	(206)	(5)	(104)
Distributions on noncontrolling interests units	(4,469)	(4,513)	(9,106)	(9,117)
Ending Balance	147,439	157,905	147,439	157,905
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Consolidated Real Estate Entities [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	28,952	23,032	27,894	22,756
Contribution from noncontrolling interest	1,520	1,630	2,578	1,906
Ending Balance	$ 30,472	$ 24,662	$ 30,472	$ 24,662