XML 51 R36.htm IDEA: XBRL DOCUMENT
v3.22.2

MAALP Capital - Summary of Changes in Total Capital and its Components (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Dividends, Preferred Stock, Cash | $ (922) | $ (922) | $ (1,844) | $ (1,844)
M A A L P |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 6,103,343 | 6,019,514 | 6,153,888 | 6,088,389
Net Income Available for Common Unitholders | 216,560 | 223,875 | 330,137 | 272,739
Other comprehensive income - derivative instruments | 277 | 278 | 556 | 557
Issuance of units | 453 | (467) | 432 | (333)
Units repurchased and retired | (10,869) | (7,313) | (14,031) | (9,043)
Exercise of unit options |  |  | 28 | 1,466
Redeemable stock fair market value adjustment | (4,227) | (3,031) | 6,760 | (5,189)
Amortization of unearned compensation | 4,401 | 4,151 | 11,329 | 10,144
Dividends, Preferred Stock, Cash | (922) | (922) | (1,844) | (1,844)
Distributions | (148,398) | (121,568) | (277,310) | (243,002)
Acquisition of noncontrolling interest |  |  | (43,070) |
Contribution from noncontrolling interest |  | 6,131 | 2,086 | 6,764
Distribution to noncontrolling interest | (69) |  |  |
Ending Balance | 6,168,097 | 6,120,648 | 6,168,097 | 6,120,648
M A A L P | Limited Partner [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 163,566 | 204,336 | 165,116 | 206,927
Net income (loss) | 5,858 | 7,397 | 8,926 | 9,068
General partnership units issued in exchange for limited partnership units |  | (21,932) | (193) | (22,164)
Adjustment for limited partners’ capital at redemption value | (360) | (765) | (1,306) | (639)
Distributions | (4,002) | (3,696) | (7,481) | (7,852)
Ending Balance | 165,062 | 185,340 | 165,062 | 185,340
M A A L P | General Partners' Capital Account [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 5,864,191 | 5,750,074 | 5,909,700 | 5,817,270
Net Income Allocated to General Partners | 209,780 | 215,556 | 319,660 | 261,827
Issuance of units | 453 | (467) | 432 | (333)
Units repurchased and retired | (10,869) | (7,313) | (14,031) | (9,043)
Exercise of unit options |  |  | 28 | 1,466
General partnership units issued in exchange for limited partnership units |  | 21,932 | 193 | 22,164
Redeemable stock fair market value adjustment | (4,227) | (3,031) | 6,760 | (5,189)
Adjustment for limited partners’ capital at redemption value | 360 | 765 | 1,306 | 639
Amortization of unearned compensation | 4,401 | 4,151 | 11,329 | 10,144
Distributions | (144,396) | (117,872) | (269,829) | (235,150)
Acquisition of noncontrolling interest |  |  | (37,443) |
Ending Balance | 5,927,241 | 5,863,795 | 5,927,241 | 5,863,795
M A A L P | 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
M A A L P | AOCI Attributable to Noncontrolling Interest [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | (11,103) | (12,217) | (11,382) | (12,496)
Other comprehensive income - derivative instruments | 277 | 278 | 556 | 557
Ending Balance | (10,826) | (11,939) | (10,826) | (11,939)
M A A L P | Noncontrolling Interests-Consolidated Real Estate Entities [Member] |  |  |  |
Increase (Decrease) in Partners' Capital [Roll Forward] |  |  |  |
Beginning Balance | 19,849 | 10,481 | 23,614 | 9,848
Net income (loss) |  |  | (293) |
Acquisition of noncontrolling interest |  |  | (5,627) |
Contribution from noncontrolling interest |  | 6,131 | 2,086 | 6,764
Distribution to noncontrolling interest | (69) |  |  |
Ending Balance | $ 19,780 | $ 16,612 | $ 19,780 | $ 16,612

X
- Definition Acquisition of noncontrolling interests. + References No definition available. + Details
Name: | maa_AcquisitionOfNoncontrollingInterests
Namespace Prefix: | maa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Minority interest increse decrease from distribution to noncontrolling interest holders. + References No definition available. + Details
Name: | maa_MinorityInterestIncreseDecreaseFromDistributionToNoncontrollingInterestHolders
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 During Period, Value, Unit Options Exercised + References No definition available. + Details
Name: | maa_UnitsIssuedDuringPeriodValueUnitOptionsExercised
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 -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4568740-111683 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + 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: |