XML 41 R53.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Co-Venture Arrangement: (Details) ft² in Thousands, $ in Thousands | Sep. 30, 2009 USD ($) ft² | Jun. 30, 2015 USD ($) | Dec. 31, 2014 USD ($)
--- | --- | --- | ---
Co-Venture Arrangement: |  |  |
Co-venture obligation | $ |  | $ 71,861 | $ 75,450
Freehold Raceway Mall and Chandler Fashion Center |  |  |
Co-Venture Arrangement: |  |  |
Percentage of loan assumed by third party (as a percent) | 49.90% |  |
Co-venture obligation | $ | $ 168,154 |  |
Freehold Raceway Mall |  |  |
Co-Venture Arrangement: |  |  |
Property area (in square feet) | 1,668 |  |
Chandler Fashion Center |  |  |
Co-Venture Arrangement: |  |  |
Property area (in square feet) | 1,320 |  |

X
- Definition The percentage of ownership interest in the joint venture sold by the entity during the period. + References No definition available. + Details
Name: | mac_JointVentureOwnershipPercentageSold
Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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 Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 40 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.U.Q2) -URI http://asc.fasb.org/extlink&oid=6955272&loc=d3e221323-122791 + Details
Name: | us-gaap_DeferredGainOnSaleOfProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=mac_FreeholdRacewayMallMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=mac_ChandlerFashionCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |