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Property: (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Property: |
Components of property |
|  | 2012 |  | 2011 |
--- | --- | --- | --- | --- | ---
Land |  | $ | 1,572,621 |  | $ | 1,273,649 |
Buildings and improvements |  |  | 6,417,674 |  |  | 5,440,394 |
Tenant improvements |  |  | 496,203 |  |  | 442,862 |
Equipment and furnishings |  |  | 149,959 |  |  | 123,098 |
Construction in progress |  |  | 376,249 |  |  | 209,732 |
|  |  | 9,012,706 |  |  | 7,489,735 |
Less accumulated depreciation |  |  | (1,533,160 | ) |  | (1,410,692 | )
|  | $ | 7,479,546 |  | $ | 6,079,043 |

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- Definition Tabular disclosure of the components of real estate investment property. + References No definition available. + Details
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Namespace Prefix: | mac_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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