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MAA Equity (Tables) | 3 Months Ended
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Mar. 31, 2024
M A A Equity [Abstract] |
Summary of Changes in Total Equity and its Components | Changes in MAA’s total equity and its components for the three months ended March 31, 2024 and 2023 were as follows (dollars in thousands):
|  | Mid-America Apartment Communities, Inc. Shareholders’ Equity |  |  |  |  |  |  |  |  |  |
|  | Preferred Stock |  |  | Common Stock |  |  | Additional Paid-In Capital |  |  | Accumulated Distributions in Excess of Net Income |  |  | Accumulated Other Comprehensive Loss |  |  | Noncontrolling Interests - Operating Partnership |  |  | Noncontrolling Interests - Consolidated Real Estate Entities |  |  | Total Equity |
EQUITY BALANCE DECEMBER 31, 2023 |  | $ | 9 |  |  | $ | 1,168 |  |  | $ | 7,399,921 |  |  | $ | (1,298,263 | ) |  | $ | (8,764 | ) |  | $ | 163,128 |  |  | $ | 22,756 |  |  | $ | 6,279,955 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 143,749 |  |  |  | — |  |  |  | 3,861 |  |  |  | — |  |  |  | 147,610 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 501 |  |  |  | 16 |  |  |  | — |  |  |  | 517 |
Issuance and registration of common shares |  |  | — |  |  |  | — |  |  |  | 93 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 93 |
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (842 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (842 | )
Shares issued in exchange for common units |  |  | — |  |  |  | — |  |  |  | 594 |  |  |  | — |  |  |  | — |  |  |  | (594 | ) |  |  | — |  |  |  | — |
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 402 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 402 |
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | (102 | ) |  |  | — |  |  |  | — |  |  |  | 102 |  |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 6,525 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,525 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | )
Dividends on common stock ($1.4700 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (171,620 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (171,620 | )
Distributions on noncontrolling interests units ($1.4700 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,604 | ) |  |  | — |  |  |  | (4,604 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 276 |  |  |  | 276 |
EQUITY BALANCE MARCH 31, 2024 |  | $ | 9 |  |  | $ | 1,168 |  |  | $ | 7,406,189 |  |  | $ | (1,326,654 | ) |  | $ | (8,263 | ) |  | $ | 161,909 |  |  | $ | 23,032 |  |  | $ | 6,257,390 |
|  | Mid-America Apartment Communities, Inc. Shareholders’ Equity |  |  |  |  |  |  |  |  |  |
|  | Preferred Stock |  |  | Common Stock |  |  | Additional Paid-In Capital |  |  | Accumulated Distributions in Excess of Net Income |  |  | Accumulated Other Comprehensive Loss |  |  | Noncontrolling Interests - Operating Partnership |  |  | Noncontrolling Interests - Consolidated Real Estate Entities |  |  | Total Equity |
EQUITY BALANCE DECEMBER 31, 2022 |  | $ | 9 |  |  | $ | 1,152 |  |  | $ | 7,202,834 |  |  | $ | (1,188,854 | ) |  | $ | (10,052 | ) |  | $ | 163,595 |  |  | $ | 21,064 |  |  | $ | 6,189,748 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 135,910 |  |  |  | — |  |  |  | 3,664 |  |  |  | — |  |  |  | 139,574 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 261 |  |  |  | 17 |  |  |  | — |  |  |  | 278 |
Issuance and registration of common shares |  |  | — |  |  |  | 11 |  |  |  | 203,886 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 203,897 |
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (1,920 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,920 | )
Shares issued in exchange for common units |  |  | — |  |  |  | — |  |  |  | 479 |  |  |  | — |  |  |  | — |  |  |  | (479 | ) |  |  | — |  |  |  | — |
Shares issued in exchange for redeemable stock |  |  | — |  |  |  | 4 |  |  |  | 577 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 581 |
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 793 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 793 |
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | (3,928 | ) |  |  | — |  |  |  | — |  |  |  | 3,928 |  |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 6,379 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,379 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | )
Dividends on common stock ($1.4000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (163,252 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (163,252 | )
Distributions on noncontrolling interests units ($1.4000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,416 | ) |  |  | — |  |  |  | (4,416 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 256 |  |  |  | 256 |
EQUITY BALANCE MARCH 31, 2023 |  | $ | 9 |  |  | $ | 1,167 |  |  | $ | 7,408,307 |  |  | $ | (1,216,325 | ) |  | $ | (9,791 | ) |  | $ | 166,309 |  |  | $ | 21,320 |  |  | $ | 6,370,996 |

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- Definition MAA Equity. + References No definition available. + Details
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Namespace Prefix: | maa_
Data Type: | xbrli:stringItemType
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- Definition Shareholders' Equity [Table Text Block] + References No definition available. + Details
Name: | maa_ShareholdersEquityTableTextBlock
Namespace Prefix: | maa_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration