XML 48 R37.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

MAALP Capital - Summary of Changes in Total Capital and its Components (Details) - M A A L P [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 Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | $ 6,257,371 | $ 6,370,977 | $ 6,279,936 | $ 6,189,729
Net Income Available for Common Unitholders | 104,662 | 149,657 | 252,272 | 289,231
Other comprehensive income - derivative instruments | 503 | 278 | 1,020 | 556
Issuance of units | (890) | (841) | (797) | 203,056
Units repurchased and retired | (4,132) | (5,920) | (4,974) | (7,840)
Units 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)
Distributions | (176,438) | (167,848) | (352,662) | (335,516)
Contribution from noncontrolling interest | 1,630 | 1,009 | 1,906 | 1,265
Ending Balance | 6,186,213 | 6,350,053 | 6,186,213 | 6,350,053
Limited Partner [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 161,909 | 166,309 | 163,128 | 163,595
Net income (loss) | 2,709 | 3,969 | 6,570 | 7,633
General partner units issued in exchange for limited partner units | (2,009) | (52) | (2,603) | (531)
Adjustment for limited partners’ capital at redemption value | (191) | (182) | (73) | 3,763
Distributions | (4,513) | (4,418) | (9,117) | (8,834)
Ending Balance | 157,905 | 165,626 | 157,905 | 165,626
General Partners' Capital Account [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 6,014,015 | 6,126,498 | 6,036,154 | 5,948,498
Net Income Allocated to General Partners | 101,031 | 144,766 | 243,858 | 279,754
Issuance of units | (890) | (841) | (797) | 203,056
Units repurchased and retired | (4,132) | (5,920) | (4,974) | (7,840)
General partner units issued in exchange for limited partner units | 2,009 | 52 | 2,603 | 531
Units issued in exchange for redeemable stock | 2,069 |  | 2,069 | 581
Redeemable stock fair market value adjustment | (1,445) | (129) | (1,043) | 664
Adjustment for limited partners’ capital at redemption value | 191 | 182 | 73 | (3,763)
Amortization of unearned compensation | 3,805 | 3,792 | 10,330 | 10,171
Distributions | (171,925) | (163,430) | (343,545) | (326,682)
Ending Balance | 5,944,728 | 6,104,970 | 5,944,728 | 6,104,970
Accumulated Distributions in Excess of Net Income [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 66,840 | 66,840 | 66,840 | 66,840
Net income (loss) | 922 | 922 | 1,844 | 1,844
Dividends, Preferred Stock, Cash | (922) | (922) | (1,844) | (1,844)
Ending Balance | 66,840 | 66,840 | 66,840 | 66,840
AOCI Attributable to Noncontrolling Interest [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | (8,425) | (9,990) | (8,942) | (10,268)
Other comprehensive income - derivative instruments | 503 | 278 | 1,020 | 556
Ending Balance | (7,922) | (9,712) | (7,922) | (9,712)
Noncontrolling Interests-Consolidated Real Estate Entities [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [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

X
- Definition Adjustment for limited partners' capital at redemption value. + References No definition available. + Details
Name: | maa_AdjustmentForLimitedPartnersCapitalAtRedemptionValue
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amortization of unearned compensation + References No definition available. + Details
Name: | maa_AmortizationUnearnedCompensation
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Distributions + References No definition available. + Details
Name: | maa_Distributions
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value option and measurement. + References No definition available. + Details
Name: | maa_EffectOnRetainedEarningsAccumulatedDeficitDueToFairValueOptionAndMeasurement
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition General Partnership Units Issued in Exchange for Limited Partnership Units + References No definition available. + Details
Name: | maa_GeneralPartnershipUnitsIssuedInExchangeForLimitedPartnershipUnits
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Income Available for Common Unitholders + References No definition available. + Details
Name: | maa_NetIncomeAvailableForCommonUnitholders
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Units Issued during period value new issues net. + References No definition available. + Details
Name: | maa_UnitsIssuedDuringPeriodValueNewIssuesNet
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Units Issued in Exchange for Redeemable Stock. + References No definition available. + Details
Name: | maa_UnitsIssuedInExchangeForRedeemableStock
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Units Repurchased and Retired During Period, Value. + References No definition available. + Details
Name: | maa_UnitsRepurchasedAndRetiredDuringPeriodValue
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 2 -SubTopic 405 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477787/942-405-45-2 + Details
Name: | us-gaap_DividendsPreferredStockCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_IncreaseDecreaseInPartnersCapitalRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-16 + Details
Name: | us-gaap_MinorityInterestPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of net income allocated to general partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 + Details
Name: | us-gaap_NetIncomeLossAllocatedToGeneralPartners
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate amount of net income allocated to limited partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5 + Details
Name: | us-gaap_NetIncomeLossAllocatedToLimitedPartners
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-11 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A + Details
Name: | us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of ownership interest of different classes of partners in limited partnership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_PartnersCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=maa_MAALPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerCapitalComponentsAxis=us-gaap_LimitedPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerCapitalComponentsAxis=maa_GeneralPartnersCapitalAccountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_AociAttributableToNoncontrollingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |