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Borrowings Indentures Covenant (Details) - Unsecured Debt - 4.0% Senior Notes due 2025 [Member] | Dec. 31, 2015
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Debt Instrument [Line Items] |
Covenant Obligation, Debt to Total Asset Value | 60.00%
Covenant Obligation, Unencumbered Leverage Ratio | 150.00%

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- Definition Covenant Obligation, Debt to Total Asset Value + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Covenant Obligation, Unencumbered Leverage Ratio + References No definition available. + Details
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Namespace Prefix: | maa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |