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MAALP Capital (Tables) | 3 Months Ended
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Mar. 31, 2023
M A A L P Capital [Abstract] |
Summary of Changes in Total Capital and its Components | Changes in MAALP’s total capital and its components for the three months ended March 31, 2023 and 2022 were as follows (dollars in thousands):
|  | Mid-America Apartments, L.P. Unitholders’ Capital |  |  |  |  |  |  |
|  | General Partner |  |  | Limited Partners |  |  | Preferred Units |  |  | Accumulated Other Comprehensive Loss |  |  | Noncontrolling Interests - Consolidated Real Estate Entities |  |  | Total Partnership Capital |
CAPITAL BALANCE DECEMBER 31, 2022 |  | $ | 5,948,498 |  |  | $ | 163,595 |  |  | $ | 66,840 |  |  | $ | (10,268 | ) |  | $ | 21,064 |  |  | $ | 6,189,729 |
Net income |  |  | 134,988 |  |  |  | 3,664 |  |  |  | 922 |  |  |  | — |  |  |  | — |  |  |  | 139,574 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 278 |  |  |  | — |  |  |  | 278 |
Issuance of units |  |  | 203,897 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 203,897 |
Units repurchased and retired |  |  | (1,920 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,920 | )
General partnership units issued in exchange for limited partnership units |  |  | 479 |  |  |  | (479 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Units issued in exchange for redeemable stock |  |  | 581 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 581 |
Redeemable units fair market value adjustment |  |  | 793 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 793 |
Adjustment for limited partners’ capital at redemption value |  |  | (3,945 | ) |  |  | 3,945 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | 6,379 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,379 |
Distributions to preferred unitholders |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | (922 | )
Distributions to common unitholders ($1.4000 per unit) |  |  | (163,252 | ) |  |  | (4,416 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (167,668 | )
Distribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 256 |  |  |  | 256 |
CAPITAL BALANCE MARCH 31, 2023 |  | $ | 6,126,498 |  |  | $ | 166,309 |  |  | $ | 66,840 |  |  | $ | (9,990 | ) |  | $ | 21,320 |  |  | $ | 6,370,977 |
|  | Mid-America Apartments, L.P. Unitholders’ Capital |  |  |  |  |  |  |
|  | General Partner |  |  | Limited Partners |  |  | Preferred Units |  |  | Accumulated Other Comprehensive Loss |  |  | Noncontrolling Interests - Consolidated Real Estate Entities |  |  | Total Partnership Capital |
CAPITAL BALANCE DECEMBER 31, 2021 |  | $ | 5,909,700 |  |  | $ | 165,116 |  |  | $ | 66,840 |  |  | $ | (11,382 | ) |  | $ | 23,614 |  |  | $ | 6,153,888 |
Net income (loss) |  |  | 109,880 |  |  |  | 3,068 |  |  |  | 922 |  |  |  | — |  |  |  | (293 | ) |  |  | 113,577 |
Other comprehensive income - derivative instruments |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 279 |  |  |  | — |  |  |  | 279 |
Issuance of units |  |  | 21 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 21 |
Units repurchased and retired |  |  | (3,162 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (3,162 | )
Exercise of unit options |  |  | 28 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 28 |
General partnership units issued in exchange for limited partnership units |  |  | 193 |  |  |  | (193 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Redeemable units fair market value adjustment |  |  | 2,533 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,533 |
Adjustment for limited partners’ capital at redemption value |  |  | 946 |  |  |  | (946 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amortization of unearned compensation |  |  | 6,928 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6,928 |
Distributions to preferred unitholders |  |  | — |  |  |  | — |  |  |  | (922 | ) |  |  | — |  |  |  | — |  |  |  | (922 | )
Distributions to common unitholders ($1.0875 per unit) |  |  | (125,433 | ) |  |  | (3,479 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (128,912 | )
Acquisition of noncontrolling interest |  |  | (37,443 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (5,627 | ) |  |  | (43,070 | )
Contribution from noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,155 |  |  |  | 2,155 |
CAPITAL BALANCE MARCH 31, 2022 |  | $ | 5,864,191 |  |  | $ | 163,566 |  |  | $ | 66,840 |  |  | $ | (11,103 | ) |  | $ | 19,849 |  |  | $ | 6,103,343 |

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- Definition MAALP Capital [Abstract] + References No definition available. + Details
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- Definition Partners' Capital [Table Text Block] + References No definition available. + Details
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Namespace Prefix: | maa_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration