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MAA Equity (Tables) | 6 Months Ended
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Jun. 30, 2023
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 June 30, 2023 and 2022 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 MARCH 31, 2023 |  | $ | 9 |  |  | $ | 1,167 |  |  | $ | 7,408,307 |  |  | $ | (1,216,325 | ) |  | $ | (9,791 | ) |  | $ | 166,309 |  |  | $ | 21,320 |  |  | $ | 6,370,996 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 145,688 |  |  |  | — |  |  |  | 3,969 |  |  |  | — |  |  |  | 149,657 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 277 |  |  |  | 1 |  |  |  | — |  |  |  | 278 |
Issuance and registration of common shares |  |  | — |  |  |  | 1 |  |  |  | (842 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (841 | )
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (5,920 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (5,920 | )
Shares issued in exchange for common units |  |  | — |  |  |  | — |  |  |  | 52 |  |  |  | — |  |  |  | — |  |  |  | (52 | ) |  |  | — |  |  |  | — |
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (129 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (129 | )
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | 183 |  |  |  | — |  |  |  | — |  |  |  | (183 | ) |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 3,792 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,792 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | )
Dividends on common stock ($1.4000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (163,430 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (163,430 | )
Dividends on noncontrolling interests units ($1.4000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,418 | ) |  |  | — |  |  |  | (4,418 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,009 |  |  |  | 1,009 |
EQUITY BALANCE JUNE 30, 2023 |  | $ | 9 |  |  | $ | 1,168 |  |  | $ | 7,405,572 |  |  | $ | (1,235,118 | ) |  | $ | (9,514 | ) |  | $ | 165,626 |  |  | $ | 22,329 |  |  | $ | 6,350,072 |
|  | 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 MARCH 31, 2022 |  | $ | 9 |  |  | $ | 1,151 |  |  | $ | 7,198,474 |  |  | $ | (1,268,827 | ) |  | $ | (10,860 | ) |  | $ | 163,566 |  |  | $ | 19,849 |  |  | $ | 6,103,362 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 210,702 |  |  |  | — |  |  |  | 5,858 |  |  |  | — |  |  |  | 216,560 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 269 |  |  |  | 8 |  |  |  | — |  |  |  | 277 |
Issuance and registration of common shares |  |  | — |  |  |  | 1 |  |  |  | (454 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (453 | )
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (10,869 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (10,869 | )
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,227 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,227 |
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | 368 |  |  |  | — |  |  |  | — |  |  |  | (368 | ) |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 4,401 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,401 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (922 | )
Dividends on common stock ($1.2500 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (144,396 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (144,396 | )
Dividends on noncontrolling interests units ($1.2500 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,002 | ) |  |  | — |  |  |  | (4,002 | )
Distribution to noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (69 | ) |  |  | (69 | )
EQUITY BALANCE JUNE 30, 2022 |  | $ | 9 |  |  | $ | 1,152 |  |  | $ | 7,191,920 |  |  | $ | (1,199,216 | ) |  | $ | (10,591 | ) |  | $ | 165,062 |  |  | $ | 19,780 |  |  | $ | 6,168,116 |
Changes in MAA’s total equity and its components for the six months ended June 30, 2023 and 2022 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, 2022 |  | $ | 9 |  |  | $ | 1,152 |  |  | $ | 7,202,834 |  |  | $ | (1,188,854 | ) |  | $ | (10,052 | ) |  | $ | 163,595 |  |  | $ | 21,064 |  |  | $ | 6,189,748 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 281,598 |  |  |  | — |  |  |  | 7,633 |  |  |  | — |  |  |  | 289,231 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 538 |  |  |  | 18 |  |  |  | — |  |  |  | 556 |
Issuance and registration of common shares |  |  | — |  |  |  | 12 |  |  |  | 203,044 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 203,056 |
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (7,840 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (7,840 | )
Shares issued in exchange for common units |  |  | — |  |  |  | — |  |  |  | 531 |  |  |  | — |  |  |  | — |  |  |  | (531 | ) |  |  | — |  |  |  | — |
Shares issued in exchange for redeemable stock |  |  | — |  |  |  | 4 |  |  |  | 577 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 581 |
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 664 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 664 |
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | (3,745 | ) |  |  | — |  |  |  | — |  |  |  | 3,745 |  |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 10,171 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 10,171 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  |  |  |  | (1,844 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,844 | )
Dividends on common stock ($2.8000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (326,682 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (326,682 | )
Dividends on noncontrolling interests units ($2.8000 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (8,834 | ) |  |  | — |  |  |  | (8,834 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,265 |  |  |  | 1,265 |
EQUITY BALANCE JUNE 30, 2023 |  | $ | 9 |  |  | $ | 1,168 |  |  | $ | 7,405,572 |  |  | $ | (1,235,118 | ) |  | $ | (9,514 | ) |  | $ | 165,626 |  |  | $ | 22,329 |  |  | $ | 6,350,072 |
|  | 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, 2021 |  | $ | 9 |  |  | $ | 1,151 |  |  | $ | 7,230,956 |  |  | $ | (1,255,807 | ) |  | $ | (11,132 | ) |  | $ | 165,116 |  |  | $ | 23,614 |  |  | $ | 6,153,907 |
Net income (loss) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 321,504 |  |  |  | — |  |  |  | 8,926 |  |  |  | (293 | ) |  |  | 330,137 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 541 |  |  |  | 15 |  |  |  | — |  |  |  | 556 |
Issuance and registration of common shares |  |  | — |  |  |  | 1 |  |  |  | (433 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (432 | )
Shares repurchased and retired |  |  | — |  |  |  | — |  |  |  | (14,031 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (14,031 | )
Exercise of stock options |  |  | — |  |  |  | — |  |  |  | 28 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 28 |
Shares issued in exchange for common units |  |  | — |  |  |  | — |  |  |  | 193 |  |  |  | — |  |  |  | — |  |  |  | (193 | ) |  |  | — |  |  |  | — |
Redeemable stock fair market value adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,760 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,760 |
Adjustment for noncontrolling interests in Operating Partnership |  |  | — |  |  |  | — |  |  |  | 1,321 |  |  |  | — |  |  |  | — |  |  |  | (1,321 | ) |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | — |  |  |  | — |  |  |  | 11,329 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 11,329 |
Dividends on preferred stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,844 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,844 | )
Dividends on common stock ($2.3375 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (269,829 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (269,829 | )
Dividends on noncontrolling interests units ($2.3375 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (7,481 | ) |  |  | — |  |  |  | (7,481 | )
Acquisition of noncontrolling interest |  |  | — |  |  |  | — |  |  |  | (37,443 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (5,627 | ) |  |  | (43,070 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,086 |  |  |  | 2,086 |
EQUITY BALANCE JUNE 30, 2022 |  | $ | 9 |  |  | $ | 1,152 |  |  | $ | 7,191,920 |  |  | $ | (1,199,216 | ) |  | $ | (10,591 | ) |  | $ | 165,062 |  |  | $ | 19,780 |  |  | $ | 6,168,116 |

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- Definition MAA Equity. + References No definition available. + Details
Name: | maa_MAAEquityAbstract
Namespace Prefix: | maa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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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