XML 53 R42.htm IDEA: XBRL DOCUMENT
v3.25.3

Shareholders' Equity of MAA - Additional Information (Details) - shares | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Equity [Line Items] |  |  |  |  |
Common stock, shares outstanding | 117,081,742 | 116,880,291 | 117,081,742 | 116,880,291 | 116,883,421
Common Shares Issuable Upon Conversion Of Convertible Stock | 2,941,839 | 3,075,552 | 2,941,839 | 3,075,552 |
Total common shares and operating partnership units outstanding | 120,023,581 | 119,955,843 | 120,023,581 | 119,955,843 |
At The Market Offering [Member] |  |  |  |  |
Equity [Line Items] |  |  |  |  |
Common stock shares sold | 0 | 0 | 0 | 0 |
Number Of Shares Remaining For Issuance |  |  | 4,000,000 |  |
Maximum [Member] | At The Market Offering [Member] |  |  |  |  |
Equity [Line Items] |  |  |  |  |
Common stock shares sold |  |  | 4,000,000 |  |

X
- Definition Common Shares and Operating Partnership Units, Outstanding + References No definition available. + Details
Name: | maa_CommonSharesAndOperatingPartnershipUnitsOutstanding
Namespace Prefix: | maa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Shares Issuable upon Conversion of Convertible Stock + References No definition available. + Details
Name: | maa_CommonSharesIssuableUponConversionOfConvertibleStock
Namespace Prefix: | maa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Equity [Line Items] + References No definition available. + Details
Name: | maa_EquityLineItems
Namespace Prefix: | maa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares remaining for issuance. + References No definition available. + Details
Name: | maa_NumberOfSharesRemainingForIssuance
Namespace Prefix: | maa_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.6-05(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(4)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 + Details
Name: | us-gaap_CommonStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=maa_AtTheMarketOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |