Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2022	Jul. 25, 2022
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Registrant Name	MID-AMERICA APARTMENT COMMUNITIES, INC.
Entity Central Index Key	0000912595
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		115,438,832
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	001-12762
Entity Incorporation, State or Country Code	TN
Entity Tax Identification Number	62-1543819
Entity Address, Address Line One	6815 Poplar Ave
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Germantown
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38138
City Area Code	901
Local Phone Number	682-6600
Document Quarterly Report	true
Document Transition Report	false
Common Stock [Member]
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	MAA
Title of 12(b) Security	Common Stock
Cumulative Preferred Stock [Member]
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	MAA*I
Title of 12(b) Security	8.50% Series I Cumulative Redeemable Preferred Stock
Limited Partner [Member]
Document Information [Line Items]
Entity Registrant Name	MID-AMERICA APARTMENTS, L.P.
Entity Central Index Key	0001581776
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity File Number	333-190028-01
Entity Tax Identification Number	62-1543816
Entity Address, Address Line One	6815 Poplar Ave
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Germantown
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38138
City Area Code	901
Local Phone Number	682-6600