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Collaborative Agreement (Details) - USD ($) $ in Thousands |  | 6 Months Ended |
--- | --- | --- | ---
Aug. 31, 2018 | Aug. 31, 2018 | Mar. 01, 2018
Equity Method Investments and Joint Ventures [Abstract] |  |  |
Ownership percentage |  |  | 25.00%
Outside partner interest of the operating partnership |  |  | 75.00%
Proceeds from sale | $ 142,500 |  |
Reimbursement percent |  | 75.00% |

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- Definition Joint Venture Ownership Percent + References No definition available. + Details
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Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Joint Venture Ownership Percent by Other Owners + References No definition available. + Details
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Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Reimbursement Percent, Collaborative Arrangement + References No definition available. + Details
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Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | duration