XML 24 R46.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Organization: (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 entity | Dec. 31, 2013
Subsidiary of Limited Liability Company or Limited Partnership [Line Items] |  |
Number of management companies (in entities) | 7 mac_NumberOfRealEstateManagementCompanies |
The Macerich Partnership, L.P. |  |
Subsidiary of Limited Liability Company or Limited Partnership [Line Items] |  |
Ownership interest in operating partnership (as a percent) | 94.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = mac_TheMacerichPartnershipLPMember | 93.00%us-gaap_MinorityInterestOwnershipPercentageByParent / dei_LegalEntityAxis = mac_TheMacerichPartnershipLPMember

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

X
- Details
Name: | dei_LegalEntityAxis=mac_TheMacerichPartnershipLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |