Document And Entity Information
May 19, 2020
Document And Entity Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date May 19, 2020
Entity Registrant Name MID-AMERICA APARTMENT COMMUNITIES, INC.
Entity Central Index Key 0000912595
Entity Emerging Growth Company 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 Avenue, 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
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Common Stock [Member]  
Document And Entity Information [Line Items]  
Title of 12(b) Security Common Stock, par value $.01 per share
Trading Symbol(s) MAA
Security Exchange Name NYSE
Cumulative Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Title of 12(b) Security 8.50% Series I Cumulative Redeemable Preferred Stock, $.01 par value per share
Trading Symbol(s) MAA*I
Security Exchange Name NYSE