v3.26.1
MAA Equity - Summary of Changes in Total Equity and its Components (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance     $ 5,819,243  
Net income (loss) $ 124,818 $ 110,875 251,429 $ 297,281
Ending Balance 5,582,594   5,582,594  
Mid America Apartment Communities Inc. Shareholders Equity [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance 5,690,310 6,133,470 5,819,243 6,125,434
Net income (loss) 124,818 110,875 251,429 297,281
Other comprehensive income - derivative instruments 381 429 762 858
Issuance and registration of common shares (754) (1,106) (600) (949)
Shares repurchased and retired (51,916) (1,769) (125,555) (3,071)
Exercise of stock options   2,109   38
Shares issued in exchange for redeemable stock       2,109
Redeemable stock fair market value adjustment (2,598) 2,724 (110) 829
Amortization of unearned compensation 3,953 3,815 10,212 9,676
Dividends on preferred stock (922) (922) (1,844) (1,844)
Dividends on common stock (177,552) (177,411) (355,602) (354,568)
Acquisition of noncontrolling interest     (10,213)  
Distributions on noncontrolling interests units (4,473) (4,469) (8,964) (9,106)
Contributions from noncontrolling interest 1,347 1,520 3,836 2,578
Ending Balance 5,582,594 6,069,265 5,582,594 6,069,265
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 1,161 1,166 1,166 1,166
Issuance and registration of common shares 0 1 1 1
Shares repurchased and retired (4)   (10)  
Shares issued in exchange for common units   1   1
Ending Balance 1,157 1,168 1,157 1,168
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Additional Paid-in Capital [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance 7,331,507 7,422,913 7,401,962 7,417,453
Issuance and registration of common shares (754) (1,107) (601) (950)
Shares repurchased and retired (51,912) (1,769) (125,545) (3,071)
Exercise of stock options   2,109   38
Shares issued in exchange for common units 137 5,608 594 6,367
Shares issued in exchange for redeemable stock       2,109
Adjustment for noncontrolling interests in Operating Partnership 886 58 2,034 5
Amortization of unearned compensation 3,953 3,815 10,212 9,676
Acquisition of noncontrolling interest     (4,839)  
Ending Balance 7,283,817 7,431,627 7,283,817 7,431,627
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 (1,787,111) (1,467,858) (1,734,986) (1,469,557)
Net income (loss) 121,750 108,127 246,109 289,800
Redeemable stock fair market value adjustment (2,598) 2,724 (110) 829
Dividends on preferred stock (922) (922) (1,844) (1,844)
Dividends on common stock (177,552) (177,411) (355,602) (354,568)
Ending Balance (1,846,433) (1,535,340) (1,846,433) (1,535,340)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Accumulated Other Comprehensive Loss [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance (4,928) (6,522) (5,300) (6,940)
Other comprehensive income - derivative instruments 373 412 745 830
Ending Balance (4,555) (6,110) (4,555) (6,110)
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Operating Partnership [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance 138,537 154,810 141,503 155,409
Net income (loss) 3,068 2,748 6,189 7,481
Other comprehensive income - derivative instruments 8 17 17 28
Shares issued in exchange for common units (137) (5,609) (594) (6,368)
Adjustment for noncontrolling interests in Operating Partnership (886) (58) (2,034) (5)
Distributions on noncontrolling interests units (4,473) (4,469) (8,964) (9,106)
Ending Balance 136,117 147,439 136,117 147,439
Mid America Apartment Communities Inc. Shareholders Equity [Member] | Noncontrolling Interests - Consolidated Real Estate Entities [Member]        
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Beginning Balance 11,135 28,952 14,889 27,894
Net income (loss)     (869)  
Acquisition of noncontrolling interest     (5,374)  
Contributions from noncontrolling interest 1,347 1,520 3,836 2,578
Ending Balance $ 12,482 $ 30,472 $ 12,482 $ 30,472