XML 95 R79.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Co-Venture Arrangement - Schedule of Co-venture Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Co-Venture Arrangement |  |
Liability—Co-venture obligation | $ 0 | $ 58,973
Freehold Raceway Mall and Chandler Fashion Center | Joint venture |  |
Co-Venture Arrangement |  |
Investments in unconsolidated joint ventures | $ 31,150 | 0
Liability—Co-venture obligation |  | $ 58,973

X
- Definition Co-Venture Asset, Distributions in Excess of Obligation + References No definition available. + Details
Name: | mac_CoVentureAssetDistributionsinExcessofObligation
Namespace Prefix: | mac_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | mac_ScheduleOfJointVenturesLineItems
Namespace Prefix: | mac_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_DeferredGainOnSaleOfProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mac_FreeholdRacewayMallAndChandlerFashionCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |