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Subsequent Events: (Details) (Subsequent event, Dividend declared, USD $) | 0 Months Ended
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Apr. 26, 2013
Subsequent event | Dividend declared |
Subsequent events |
Dividend/distribution for common stockholders and OP Unit holders (in dollars per share) | $ 0.58
Percentage of dividend/distribution payable in cash | 100.00%

X
- Definition Percentage of the cash component of the aggregate dividend declared (not including cash paid in lieu of fractional shares). + 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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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 32 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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