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v2.4.0.6

Organization: (Details) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2012 entity | Dec. 31, 2011
Organization: |  |
Ownership interest in operating partnership (as a percent) | 93.00% | 92.00%
Number of management companies (in entities) | 7 |

X
- Definition Represents the number of management companies through which the entity provides property management, leasing and redevelopment for its real estate portfolio. + References No definition available. + Details
Name: | mac_NumberOfRealEstateManagementCompanies
Namespace Prefix: | mac_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration