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v2.4.1.9

Property - Narrative (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Property, Plant and Equipment [Line Items] |  |
Depreciation expenses | $ 90,197 us-gaap_DepreciationNonproduction | $ 68,478 us-gaap_DepreciationNonproduction
Gain on sale or write-down of assets | 1,056 mac_GainonSaleofWritedownofAssets |
Loss on sale or write-down of assets | 121 mac_LossonSaleorWriteDownofAssets |
Rotterdam Square, Somersville Town Center and Lake Square Mall |  |
Property, Plant and Equipment [Line Items] |  |
Loss on sale or write-down of assets |  | $ 1,611 mac_LossonSaleorWriteDownofAssets / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = mac_RotterdamSquareSomersvilleTownCenterandLakeSquareMallMember

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- Definition The expense recognized in the current period that allocates the cost of nonproduction tangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Details
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- Details
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Balance Type: |
Period Type: |