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MAALP Capital - Summary of Changes in Total Capital and its Components (Parenthetical) (Details) - $ / shares | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
M A A L P | Limited Partner [Member] |  |  |  |
Capital Disclosure [Line Items] |  |  |  |
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ 0.9600 | $ 0.9225 | $ 2.8800 | $ 2.7675

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