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MAA Equity - Summary of Changes in Total Equity and its Components (Details) - Mid America Apartment Communities Inc. Shareholders Equity [Member] - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | $ 6,189,748 | $ 6,153,907
Net Income Including Portion Attributable to Noncontrolling Interest | 139,574 | 113,577
Other comprehensive income - derivative instruments | 278 | 279
Issuance and registration of common shares | 203,897 | 21
Shares repurchased and retired | (1,920) | (3,162)
Exercise of stock options |  | 28
Shares issued in exchange for redeemable stock | 581 |
Redeemable stock fair market value adjustment | 793 | 2,533
Amortization of unearned compensation | 6,379 | 6,928
Dividends, Preferred Stock, Cash | (922) | (922)
Dividends on common stock | (163,252) | (125,433)
Dividends on noncontrolling interest units | (4,416) | (3,479)
Acquisition of noncontrolling interest |  | (43,070)
Distribution to noncontrolling interest | 256 |
Contribution from noncontrolling interest |  | 2,155
Ending Balance | 6,370,996 | 6,103,362
Preferred Stock [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 9 | 9
Ending Balance | 9 | 9
Common Stock [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 1,152 | 1,151
Issuance and registration of common shares | 11 |
Shares issued in exchange for redeemable stock | 4 |
Ending Balance | 1,167 | 1,151
Additional Paid-in Capital [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 7,202,834 | 7,230,956
Issuance and registration of common shares | 203,886 | 21
Shares repurchased and retired | (1,920) | (3,162)
Exercise of stock options |  | 28
Shares issued in exchange for common units | 479 | 193
Shares issued in exchange for redeemable stock | 577 |
Adjustment for noncontrolling interests in Operating Partnership | (3,928) | 953
Amortization of unearned compensation | 6,379 | 6,928
Acquisition of noncontrolling interest |  | (37,443)
Ending Balance | 7,408,307 | 7,198,474
Accumulated Distributions in Excess of Net Income [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | (1,188,854) | (1,255,807)
Net income attributable to MAA | 135,910 | 110,802
Redeemable stock fair market value adjustment | 793 | 2,533
Dividends, Preferred Stock, Cash | (922) | (922)
Dividends on common stock | (163,252) | (125,433)
Ending Balance | (1,216,325) | (1,268,827)
Accumulated Other Comprehensive Loss [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | (10,052) | (11,132)
Other comprehensive income - derivative instruments | 261 | 272
Ending Balance | (9,791) | (10,860)
Noncontrolling Interests - Operating Partnership [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 163,595 | 165,116
Net Income Attributable to Noncontrolling Interest | 3,664 | 3,068
Other comprehensive income - derivative instruments | 17 | 7
Shares issued in exchange for common units | (479) | (193)
Adjustment for noncontrolling interests in Operating Partnership | 3,928 | (953)
Dividends on noncontrolling interest units | (4,416) | (3,479)
Ending Balance | 166,309 | 163,566
Noncontrolling Interests - Consolidated Real Estate Entities [Member] |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning Balance | 21,064 | 23,614
Net Income Attributable to Noncontrolling Interest |  | (293)
Acquisition of noncontrolling interest |  | (5,627)
Distribution to noncontrolling interest | 256 |
Contribution from noncontrolling interest |  | 2,155
Ending Balance | $ 21,320 | $ 19,849

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