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Investments in Unconsolidated Joint Ventures: Company Ownership (Details) | Dec. 31, 2014
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443 Wabash MAB LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_A443WabashMABLLCMember
Biltmore Shopping Center Partners LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_BiltmoreShoppingCenterPartnersLLCMember
Candlestick Center LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_CandlestickCenterLLCMember
Coolidge Holding LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 37.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_CoolidgeHoldingMember
Corte Madera Village, LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.10%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_CorteMaderaVillageLLCMember
Gallery, The—Various Entities |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_TheGalleryVariousEntitiesMember
Jaren Associates 4 |
Investments in unconsolidated joint ventures: |
Ownership % | 12.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_JarenAssociates4Member
Kierland Commons Investment LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_KierlandCommonsInvestmentLLCMember
Macerich Northwestern Associates—Broadway Plaza |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_MacerichNorthwesternAssociatesBroadwayPlazaMember
North Bridge Chicago LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_NorthBridgeChicagoLLCMember
One Scottsdale Investors LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_OneScottsdaleMember
Propcor II Associates, LLC—Boulevard Shops |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_PropcorIIAssociatesLLCBoulevardShopsMember
Scottsdale Fashion Square Partnership |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_ScottsdaleFashionSquarePartnershipMember
The Market at Estrella Falls LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 39.70%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_TheMarketAtEstrellaFallsMember
Tysons Corner LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_TysonsCornerLLCMember
Tysons Corner Property Holdings II LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_TysonsCornerPropertyHoldingsIILLCMember
Tysons Corner Property LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_TysonsCornerPropertyLLCMember
West Acres Development, LLP |
Investments in unconsolidated joint ventures: |
Ownership % | 19.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WestAcresDevelopmentLLPMember
Westcor/Gilbert, L.L.C. |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WestcorGilbertLLCMember
Westcor/Queen Creek LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 37.90%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WestcorQueenCreekLLCMember
Westcor/Surprise Auto Park LLC |
Investments in unconsolidated joint ventures: |
Ownership % | 33.30%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WestcorSurpriseAutoParkLLCMember
WMAP, L.L.C.—Atlas Park |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WMAPLLCAtlasParkMember
WM Inland LP(2) |
Investments in unconsolidated joint ventures: |
Ownership % | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = mac_WMInlandLPMember

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