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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | $ 6,257,390 | $ 6,370,996 | $ 6,279,955 | $ 6,189,748
Net Income Including Portion Attributable to Noncontrolling Interest | 104,662 | 149,657 | 252,272 | 289,231
Other comprehensive income - derivative instruments | 503 | 278 | 1,020 | 556
Issuance and registration of common shares | (890) | (841) | (797) | 203,056
Shares repurchased and retired | (4,132) | (5,920) | (4,974) | (7,840)
Shares issued in exchange for redeemable stock | 2,069 |  | 2,069 | 581
Redeemable stock fair market value adjustment | (1,445) | (129) | (1,043) | 664
Amortization of unearned compensation | 3,805 | 3,792 | 10,330 | 10,171
Dividends, Preferred Stock, Cash | (922) | (922) | (1,844) | (1,844)
Dividends on common stock | (171,925) | (163,430) | (343,545) | (326,682)
Distributions on noncontrolling interests units | (4,513) | (4,418) | (9,117) | (8,834)
Contribution from noncontrolling interest | 1,630 | 1,009 | 1,906 | 1,265
Ending Balance | 6,186,232 | 6,350,072 | 6,186,232 | 6,350,072
Preferred Stock [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | 9 | 9 | 9 | 9
Ending Balance | 9 | 9 | 9 | 9
Common Stock [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | 1,168 | 1,167 | 1,168 | 1,152
Issuance and registration of common shares | 2 | 1 | 2 | 12
Shares repurchased and retired | (1) |  | (1) |
Shares issued in exchange for common units | 1 |  | 1 |
Shares issued in exchange for redeemable stock | (4) |  | (4) | 4
Ending Balance | 1,166 | 1,168 | 1,166 | 1,168
Additional Paid-in Capital [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | 7,406,189 | 7,408,307 | 7,399,921 | 7,202,834
Issuance and registration of common shares | (892) | (842) | (799) | 203,044
Shares repurchased and retired | (4,131) | (5,920) | (4,973) | (7,840)
Shares issued in exchange for common units | 2,008 | 52 | 2,602 | 531
Shares issued in exchange for redeemable stock | 2,073 |  | 2,073 | 577
Adjustment for noncontrolling interests in Operating Partnership | 206 | 183 | 104 | (3,745)
Amortization of unearned compensation | 3,805 | 3,792 | 10,330 | 10,171
Ending Balance | 7,409,258 | 7,405,572 | 7,409,258 | 7,405,572
Accumulated Distributions in Excess of Net Income [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | (1,326,654) | (1,216,325) | (1,298,263) | (1,188,854)
Net income attributable to MAA | 101,953 | 145,688 | 245,702 | 281,598
Redeemable stock fair market value adjustment | (1,445) | (129) | (1,043) | 664
Dividends, Preferred Stock, Cash | (922) | (922) | (1,844) | (1,844)
Dividends on common stock | (171,925) | (163,430) | (343,545) | (326,682)
Ending Balance | (1,398,993) | (1,235,118) | (1,398,993) | (1,235,118)
Accumulated Other Comprehensive Loss [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | (8,263) | (9,791) | (8,764) | (10,052)
Other comprehensive income - derivative instruments | 488 | 277 | 989 | 538
Ending Balance | (7,775) | (9,514) | (7,775) | (9,514)
Noncontrolling Interests - Operating Partnership [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | 161,909 | 166,309 | 163,128 | 163,595
Net Income Attributable to Noncontrolling Interest | 2,709 | 3,969 | 6,570 | 7,633
Other comprehensive income - derivative instruments | 15 | 1 | 31 | 18
Shares issued in exchange for common units | (2,009) | (52) | (2,603) | (531)
Adjustment for noncontrolling interests in Operating Partnership | (206) | (183) | (104) | 3,745
Distributions on noncontrolling interests units | (4,513) | (4,418) | (9,117) | (8,834)
Ending Balance | 157,905 | 165,626 | 157,905 | 165,626
Noncontrolling Interests - Consolidated Real Estate Entities [Member] |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Beginning Balance | 23,032 | 21,320 | 22,756 | 21,064
Contribution from noncontrolling interest | 1,630 | 1,009 | 1,906 | 1,265
Ending Balance | $ 24,662 | $ 22,329 | $ 24,662 | $ 22,329

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