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Partners' Capital of MAA LP (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2016
Schedule of Capital Structure [Line Items] |  |
Operating partnership units outstanding | 79,571,567 | 117,738,615
General partners' capital account, units outstanding | 75,408,571 | 113,518,212
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest | 94.80% |
Limited partners' capital account, units outstanding | 4,162,996 | 4,220,403
Noncontrolling Interest |  |
Schedule of Capital Structure [Line Items] |  |
Common Shares Issuable Upon Conversion Of Convertible Stock | 4,162,996 | 4,220,403
Redeemable Capital Shares Par Or Stated Value Per Share | $ 90.81 | $ 97.92
Limited Partners' Capital Account | $ 378.0 | $ 413.3

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