MAALP Capital - Summary of Changes in Total Capital and its Components (Details) - M A A L P [Member] - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	$ 6,279,936	$ 6,189,729
Net Income Available for Common Unitholders	147,610	139,574
Other comprehensive income - derivative instruments	517	278
Issuance of units	93	203,897
Units repurchased and retired	(842)	(1,920)
Units issued in exchange for redeemable stock		581
Redeemable stock fair market value adjustment	402	793
Amortization of unearned compensation	6,525	6,379
Dividends, Preferred Stock, Cash	(922)	(922)
Distributions	(176,224)	(167,668)
Contribution from noncontrolling interest	276	256
Ending Balance	6,257,371	6,370,977
Limited Partner [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	163,128	163,595
Net income (loss)	3,861	3,664
General partner units issued in exchange for limited partner units	(594)	(479)
Adjustment for limited partners’ capital at redemption value	118	3,945
Distributions	(4,604)	(4,416)
Ending Balance	161,909	166,309
General Partners' Capital Account [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	6,036,154	5,948,498
Net Income Allocated to General Partners	142,827	134,988
Issuance of units	93	203,897
Units repurchased and retired	(842)	(1,920)
General partner units issued in exchange for limited partner units	594	479
Units issued in exchange for redeemable stock		581
Redeemable stock fair market value adjustment	402	793
Adjustment for limited partners’ capital at redemption value	(118)	(3,945)
Amortization of unearned compensation	6,525	6,379
Distributions	(171,620)	(163,252)
Ending Balance	6,014,015	6,126,498
Accumulated Distributions in Excess of Net Income [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	66,840	66,840
Net income (loss)	922	922
Dividends, Preferred Stock, Cash	(922)	(922)
Ending Balance	66,840	66,840
AOCI Attributable to Noncontrolling Interest [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	(8,942)	(10,268)
Other comprehensive income - derivative instruments	517	278
Ending Balance	(8,425)	(9,990)
Noncontrolling Interests-Consolidated Real Estate Entities [Member]
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning Balance	22,756	21,064
Contribution from noncontrolling interest	276	256
Ending Balance	$ 23,032	$ 21,320

Adjustment for limited partners' capital at redemption value.

No definition available.

Name:	maa_AdjustmentForLimitedPartnersCapitalAtRedemptionValue
Namespace Prefix:	maa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

- Definition

Distributions

+ References

No definition available.

+ Details

Name:	maa_Distributions
Namespace Prefix:	maa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

- 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

- 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

- 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

- 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

- 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

- 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//1943274/2147481071/942-405-45-2

+ Details

Name:	us-gaap_DividendsPreferredStockCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

- 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

- 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

- 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

- 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 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 2: 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

- Definition

The amount of ownership interest of different classes of partners in limited partnership.

+ References

+ Details

Name:	us-gaap_PartnersCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	srt_ConsolidatedEntitiesAxis=maa_MAALPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

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

- Details

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

- Details

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