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Schedule III-Real Estate and Accumulated Depreciation (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Initial Cost to Company        
Land $ 2,105,538us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand      
Building and Improvements 7,923,288us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements      
Equipment and Furnishings 47,479mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing      
Cost Capitalized Subsequent to Acquisition 2,701,577us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts      
Gross Amount at Which Carried at Close of Period        
Land 2,242,291us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand      
Buildings and Improvements 10,079,773us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements      
Equipment and furnishings 152,554us-gaap_FixturesAndEquipmentGross 152,198us-gaap_FixturesAndEquipmentGross    
Construction in progress 303,264us-gaap_DevelopmentInProcess 229,169us-gaap_DevelopmentInProcess    
SEC Schedule III, Real Estate, Gross 12,777,882us-gaap_RealEstateGrossAtCarryingValue 9,181,338us-gaap_RealEstateGrossAtCarryingValue 9,012,706us-gaap_RealEstateGrossAtCarryingValue 7,489,735us-gaap_RealEstateGrossAtCarryingValue
Accumulated Depreciation 1,709,992us-gaap_RealEstateAccumulatedDepreciation 1,559,572us-gaap_RealEstateAccumulatedDepreciation 1,533,160us-gaap_RealEstateAccumulatedDepreciation 1,410,692us-gaap_RealEstateAccumulatedDepreciation
SEC Schedule III, Real Estate Investment Property, Net 11,067,890us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet      
Arrowhead Towne Center        
Initial Cost to Company        
Land 36,687us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Building and Improvements 386,662us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Cost Capitalized Subsequent to Acquisition 5,593us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 36,687us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Buildings and Improvements 390,949us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Equipment and furnishings 587us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Construction in progress 719us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
SEC Schedule III, Real Estate, Gross 428,942us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Accumulated Depreciation 23,749us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 405,193us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ArrowheadTowneCenterMember
     
Black Canyon Auto Park        
Initial Cost to Company        
Land 20,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Cost Capitalized Subsequent to Acquisition 11,448us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Gross Amount at Which Carried at Close of Period        
Land 32,046us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Construction in progress 2us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
SEC Schedule III, Real Estate, Gross 32,048us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
SEC Schedule III, Real Estate Investment Property, Net 32,048us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_BlackCanyonAutoParkMember
     
Capitola Mall        
Initial Cost to Company        
Land 20,395us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Building and Improvements 59,221us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Cost Capitalized Subsequent to Acquisition 12,593us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 20,392us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Buildings and Improvements 70,286us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Equipment and furnishings 1,226us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Construction in progress 305us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
SEC Schedule III, Real Estate, Gross 92,209us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Accumulated Depreciation 30,432us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 61,777us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CapitolaMallMember
     
Cascade Mall        
Initial Cost to Company        
Land 19,253us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Building and Improvements 9,671us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Cost Capitalized Subsequent to Acquisition (676)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 18,699us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Buildings and Improvements 9,501us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Equipment and furnishings 48us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
SEC Schedule III, Real Estate, Gross 28,248us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Accumulated Depreciation 274us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 27,974us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_CascadeMallMember
     
Chandler Fashion Center        
Initial Cost to Company        
Land 24,188us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Building and Improvements 223,143us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Cost Capitalized Subsequent to Acquisition 14,269us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 24,188us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Buildings and Improvements 232,306us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Equipment and furnishings 5,106us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
SEC Schedule III, Real Estate, Gross 261,600us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Accumulated Depreciation 82,644us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 178,956us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ChandlerFashionCenterMember
     
Danbury Fair Mall        
Initial Cost to Company        
Land 130,367us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Building and Improvements 316,951us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Cost Capitalized Subsequent to Acquisition 96,784us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 142,751us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Buildings and Improvements 395,362us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Equipment and furnishings 5,942us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Construction in progress 47us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
SEC Schedule III, Real Estate, Gross 544,102us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Accumulated Depreciation 104,765us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 439,337us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DanburyFairMallMember
     
Deptford Mall        
Initial Cost to Company        
Land 48,370us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Building and Improvements 194,250us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Cost Capitalized Subsequent to Acquisition 45,576us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 61,029us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Buildings and Improvements 224,815us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Equipment and furnishings 2,352us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
SEC Schedule III, Real Estate, Gross 288,196us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Accumulated Depreciation 52,405us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 235,791us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DeptfordMallMember
     
Desert Sky Mall        
Initial Cost to Company        
Land 9,447us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Building and Improvements 37,245us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Equipment and Furnishings 12mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Cost Capitalized Subsequent to Acquisition 2,246us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 9,082us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Buildings and Improvements 38,853us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Equipment and furnishings 953us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Construction in progress 62us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
SEC Schedule III, Real Estate, Gross 48,950us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Accumulated Depreciation 5,356us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 43,594us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_DesertSkyMallMember
     
Eastland Mall        
Initial Cost to Company        
Land 22,050us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Building and Improvements 151,605us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Cost Capitalized Subsequent to Acquisition 4,906us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 22,066us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Buildings and Improvements 155,715us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Equipment and furnishings 780us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
SEC Schedule III, Real Estate, Gross 178,561us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Accumulated Depreciation 13,815us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 164,746us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EastlandMallMember
     
Estrella Falls        
Initial Cost to Company        
Land 10,550us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Cost Capitalized Subsequent to Acquisition 61,328us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Gross Amount at Which Carried at Close of Period        
Land 9,405us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Construction in progress 62,473us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
SEC Schedule III, Real Estate, Gross 71,878us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
SEC Schedule III, Real Estate Investment Property, Net 71,878us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_EstrellaFallsTheMarketAtMember
     
Fashion Outlets of Chicago        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Cost Capitalized Subsequent to Acquisition 250,542us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Gross Amount at Which Carried at Close of Period        
Land 40,575us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Buildings and Improvements 207,432us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Equipment and furnishings 2,170us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Construction in progress 365us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
SEC Schedule III, Real Estate, Gross 250,542us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Accumulated Depreciation 13,988us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
SEC Schedule III, Real Estate Investment Property, Net 236,554us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfChicagoMember
     
Fashion Outlets of Niagara Falls USA        
Initial Cost to Company        
Land 18,581us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Building and Improvements 210,139us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Cost Capitalized Subsequent to Acquisition 99,001us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Gross Amount at Which Carried at Close of Period        
Land 27,681us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Buildings and Improvements 273,148us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Equipment and furnishings 1,103us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Construction in progress 25,789us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
SEC Schedule III, Real Estate, Gross 327,721us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Accumulated Depreciation 26,073us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
SEC Schedule III, Real Estate Investment Property, Net 301,648us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FashionOutletsOfNiagaraMember
     
Flagstaff Mall        
Initial Cost to Company        
Land 5,480us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Building and Improvements 31,773us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Cost Capitalized Subsequent to Acquisition 16,874us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 5,480us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Buildings and Improvements 47,951us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Equipment and furnishings 696us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
SEC Schedule III, Real Estate, Gross 54,127us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Accumulated Depreciation 16,510us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 37,617us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallMember
     
Flagstaff Mall, The Marketplace at        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Cost Capitalized Subsequent to Acquisition 52,830us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Gross Amount at Which Carried at Close of Period        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Buildings and Improvements 52,830us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
SEC Schedule III, Real Estate, Gross 52,830us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
Accumulated Depreciation 16,372us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
SEC Schedule III, Real Estate Investment Property, Net 36,458us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlagstaffMallTheMarketPlaceAtMember
     
FlatIron Crossing        
Initial Cost to Company        
Land 109,851us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Building and Improvements 333,540us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Cost Capitalized Subsequent to Acquisition 16,821us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Gross Amount at Which Carried at Close of Period        
Land 109,851us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Buildings and Improvements 347,830us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Equipment and furnishings 1,514us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Construction in progress 1,017us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
SEC Schedule III, Real Estate, Gross 460,212us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Accumulated Depreciation 25,877us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
SEC Schedule III, Real Estate Investment Property, Net 434,335us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FlatIronCrossingMember
     
Freehold Raceway Mall        
Initial Cost to Company        
Land 164,986us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Building and Improvements 362,841us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Cost Capitalized Subsequent to Acquisition 97,368us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 168,098us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Buildings and Improvements 452,330us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Equipment and furnishings 4,767us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
SEC Schedule III, Real Estate, Gross 625,195us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Accumulated Depreciation 134,182us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 491,013us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FreeholdRacewayMallMember
     
Fresno Fashion Fair        
Initial Cost to Company        
Land 17,966us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Building and Improvements 72,194us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Cost Capitalized Subsequent to Acquisition 47,132us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Gross Amount at Which Carried at Close of Period        
Land 17,966us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Buildings and Improvements 117,511us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Equipment and furnishings 1,754us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Construction in progress 61us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
SEC Schedule III, Real Estate, Gross 137,292us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Accumulated Depreciation 52,076us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
SEC Schedule III, Real Estate Investment Property, Net 85,216us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_FresnoFashionFairMember
     
Great Northern Mall        
Initial Cost to Company        
Land 12,187us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Building and Improvements 62,657us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Cost Capitalized Subsequent to Acquisition (20,870)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 6,981us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Buildings and Improvements 46,704us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Equipment and furnishings 289us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
SEC Schedule III, Real Estate, Gross 53,974us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Accumulated Depreciation 20,693us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 33,281us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreatNorthernMallMember
     
Green Acres Mall        
Initial Cost to Company        
Land 156,640us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Building and Improvements 321,034us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Cost Capitalized Subsequent to Acquisition 41,084us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 156,640us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Buildings and Improvements 331,971us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Equipment and furnishings 3,222us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Construction in progress 26,925us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
SEC Schedule III, Real Estate, Gross 518,758us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Accumulated Depreciation 24,260us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 494,498us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_GreenAcresMallMember
     
Kings Plaza Shopping Center        
Initial Cost to Company        
Land 209,041us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Building and Improvements 485,548us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Equipment and Furnishings 20,000mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Cost Capitalized Subsequent to Acquisition 43,955us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Gross Amount at Which Carried at Close of Period        
Land 209,041us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Buildings and Improvements 522,896us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Equipment and furnishings 21,903us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Construction in progress 4,704us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
SEC Schedule III, Real Estate, Gross 758,544us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
Accumulated Depreciation 34,229us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
SEC Schedule III, Real Estate Investment Property, Net 724,315us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_KingsPlazaMember
     
La Cumbre Plaza        
Initial Cost to Company        
Land 18,122us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Building and Improvements 21,492us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Cost Capitalized Subsequent to Acquisition 24,530us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Gross Amount at Which Carried at Close of Period        
Land 17,280us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Buildings and Improvements 46,327us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Equipment and furnishings 345us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Construction in progress 192us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
SEC Schedule III, Real Estate, Gross 64,144us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Accumulated Depreciation 20,965us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
SEC Schedule III, Real Estate Investment Property, Net 43,179us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LaCumbrePlazaMember
     
Lakewood Center        
Initial Cost to Company        
Land 140,928us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Building and Improvements 534,952us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Cost Capitalized Subsequent to Acquisition 1,666us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 140,928us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Buildings and Improvements 536,408us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Equipment and furnishings 210us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
SEC Schedule III, Real Estate, Gross 677,546us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Accumulated Depreciation 2,758us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 674,788us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LakewoodCenterMember
     
Los Cerritos Center        
Initial Cost to Company        
Land 85,670us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Building and Improvements 612,803us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Cost Capitalized Subsequent to Acquisition 2,669us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 85,670us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Buildings and Improvements 555,646us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Equipment and furnishings 76us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Construction in progress 59,750us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
SEC Schedule III, Real Estate, Gross 701,142us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Accumulated Depreciation 2,572us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 698,570us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_LosCerritosCenterMember
     
Macerich Management Co.        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Building and Improvements 8,685us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Equipment and Furnishings 26,562mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Cost Capitalized Subsequent to Acquisition 32,910us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Gross Amount at Which Carried at Close of Period        
Land 1,967us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Buildings and Improvements 7,608us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Equipment and furnishings 52,504us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Construction in progress 6,078us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
SEC Schedule III, Real Estate, Gross 68,157us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
Accumulated Depreciation 41,308us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
SEC Schedule III, Real Estate Investment Property, Net 26,849us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MacerichManagementCompanyMember
     
MACWH, LP        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Building and Improvements 25,771us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Cost Capitalized Subsequent to Acquisition 16,017us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Gross Amount at Which Carried at Close of Period        
Land 11,557us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Buildings and Improvements 27,455us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Construction in progress 2,776us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
SEC Schedule III, Real Estate, Gross 41,788us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Accumulated Depreciation 6,990us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
SEC Schedule III, Real Estate Investment Property, Net 34,798us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MACWHLPMember
     
Northgate Mall        
Initial Cost to Company        
Land 8,400us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Building and Improvements 34,865us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Equipment and Furnishings 841mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Cost Capitalized Subsequent to Acquisition 103,212us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 13,414us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Buildings and Improvements 130,229us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Equipment and furnishings 3,180us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Construction in progress 495us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
SEC Schedule III, Real Estate, Gross 147,318us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
Accumulated Depreciation 60,674us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 86,644us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthgateMallMember
     
NorthPark Mall        
Initial Cost to Company        
Land 7,746us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Building and Improvements 74,661us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Cost Capitalized Subsequent to Acquisition 5,917us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 7,885us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Buildings and Improvements 79,986us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Equipment and furnishings 441us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Construction in progress 12us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
SEC Schedule III, Real Estate, Gross 88,324us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
Accumulated Depreciation 8,141us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 80,183us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthparkMallMember
     
SouthPark Mall        
Initial Cost to Company        
Land 7,035us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Building and Improvements 38,215us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Cost Capitalized Subsequent to Acquisition 11,901us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 7,479us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Buildings and Improvements 43,276us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Equipment and furnishings 260us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Construction in progress 6,136us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
SEC Schedule III, Real Estate, Gross 57,151us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
Accumulated Depreciation 3,554us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 53,597us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthParkMallMember
     
South Plains Mall        
Initial Cost to Company        
Land 23,100us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Building and Improvements 92,728us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Cost Capitalized Subsequent to Acquisition 34,152us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 23,100us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Buildings and Improvements 124,678us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Equipment and furnishings 1,732us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Construction in progress 470us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
SEC Schedule III, Real Estate, Gross 149,980us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Accumulated Depreciation 54,543us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 95,437us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthPlainsMallMember
     
Southridge Mall        
Initial Cost to Company        
Land 6,764us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Cost Capitalized Subsequent to Acquisition 18,670us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 6,514us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Buildings and Improvements 18,828us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Equipment and furnishings 91us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Construction in progress 1us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
SEC Schedule III, Real Estate, Gross 25,434us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Accumulated Depreciation 1,505us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 23,929us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SouthRidgeMallMember
     
Stonewood Center        
Initial Cost to Company        
Land 4,948us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Building and Improvements 302,527us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Cost Capitalized Subsequent to Acquisition 26us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 4,948us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Buildings and Improvements 302,527us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Equipment and furnishings 26us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
SEC Schedule III, Real Estate, Gross 307,501us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Accumulated Depreciation 1,561us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 305,940us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_StonewoodCenterMember
     
Superstition Springs Center        
Initial Cost to Company        
Land 10,928us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Building and Improvements 112,718us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Cost Capitalized Subsequent to Acquisition 1,282us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 9,273us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Buildings and Improvements 113,358us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Equipment and furnishings 89us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Construction in progress 2,208us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
SEC Schedule III, Real Estate, Gross 124,928us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Accumulated Depreciation 3,942us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 120,986us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsCenterMember
     
Superstition Springs Power Center        
Initial Cost to Company        
Land 1,618us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Building and Improvements 4,420us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Cost Capitalized Subsequent to Acquisition 6us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 1,618us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Buildings and Improvements 4,343us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Equipment and furnishings 83us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
SEC Schedule III, Real Estate, Gross 6,044us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Accumulated Depreciation 1,464us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 4,580us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SuperstitionSpringsPowerCenterMember
     
Tangerine (Marana), The Shops at        
Initial Cost to Company        
Land 36,158us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Cost Capitalized Subsequent to Acquisition (9,591)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Gross Amount at Which Carried at Close of Period        
Land 16,922us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Construction in progress 9,645us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
SEC Schedule III, Real Estate, Gross 26,567us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
SEC Schedule III, Real Estate Investment Property, Net 26,567us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheShopsAtTangerineMaranaMember
     
The Macerich Partnership, L.P.        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Building and Improvements 2,534us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Cost Capitalized Subsequent to Acquisition 9,942us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Gross Amount at Which Carried at Close of Period        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Equipment and furnishings 6,301us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Construction in progress 6,175us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
SEC Schedule III, Real Estate, Gross 12,476us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Accumulated Depreciation 1,971us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
SEC Schedule III, Real Estate Investment Property, Net 10,505us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheMacerichPartnershipLPMember
     
Towne Mall        
Initial Cost to Company        
Land 6,652us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Building and Improvements 31,184us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Cost Capitalized Subsequent to Acquisition 3,796us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 6,877us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Buildings and Improvements 34,308us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Equipment and furnishings 447us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
SEC Schedule III, Real Estate, Gross 41,632us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Accumulated Depreciation 11,668us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 29,964us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TowneMallMember
     
Tucson La Encantada        
Initial Cost to Company        
Land 12,800us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Building and Improvements 19,699us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Cost Capitalized Subsequent to Acquisition 55,378us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Gross Amount at Which Carried at Close of Period        
Land 12,800us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Buildings and Improvements 74,580us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Equipment and furnishings 497us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
SEC Schedule III, Real Estate, Gross 87,877us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Accumulated Depreciation 36,868us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
SEC Schedule III, Real Estate Investment Property, Net 51,009us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TucsonLaEncantadaMember
     
Twenty Ninth Street        
Initial Cost to Company        
Land 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Building and Improvements 37,843us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Equipment and Furnishings 64mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Cost Capitalized Subsequent to Acquisition 210,459us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Gross Amount at Which Carried at Close of Period        
Land 23,599us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Buildings and Improvements 223,399us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Equipment and furnishings 1,244us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Construction in progress 124us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
SEC Schedule III, Real Estate, Gross 248,366us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Accumulated Depreciation 86,659us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
SEC Schedule III, Real Estate Investment Property, Net 161,707us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TwentyNinthStreetMember
     
Valley Mall        
Initial Cost to Company        
Land 16,045us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Building and Improvements 26,098us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Cost Capitalized Subsequent to Acquisition 6,829us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 15,616us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Buildings and Improvements 32,996us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Equipment and furnishings 330us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Construction in progress 30us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
SEC Schedule III, Real Estate, Gross 48,972us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
Accumulated Depreciation 3,133us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 45,839us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyMallMember
     
500 North Michigan Avenue        
Initial Cost to Company        
Land 12,851us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Building and Improvements 55,358us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Cost Capitalized Subsequent to Acquisition 5,985us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Gross Amount at Which Carried at Close of Period        
Land 10,991us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Buildings and Improvements 50,254us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Equipment and furnishings 113us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Construction in progress 12,836us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
SEC Schedule III, Real Estate, Gross 74,194us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
Accumulated Depreciation 5,338us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
SEC Schedule III, Real Estate Investment Property, Net 68,856us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_NorthMichiganAvenue500Member
     
The Oaks [Member]        
Initial Cost to Company        
Land 32,300us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Building and Improvements 117,156us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Cost Capitalized Subsequent to Acquisition 241,248us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Gross Amount at Which Carried at Close of Period        
Land 55,527us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Buildings and Improvements 330,909us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Equipment and furnishings 2,457us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Construction in progress 1,811us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
SEC Schedule III, Real Estate, Gross 390,704us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Accumulated Depreciation 101,862us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
SEC Schedule III, Real Estate Investment Property, Net 288,842us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_TheOaksMember
     
Pacific View        
Initial Cost to Company        
Land 8,697us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Building and Improvements 8,696us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Cost Capitalized Subsequent to Acquisition 128,517us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Gross Amount at Which Carried at Close of Period        
Land 7,854us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Buildings and Improvements 135,586us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Equipment and furnishings 2,470us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
SEC Schedule III, Real Estate, Gross 145,910us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Accumulated Depreciation 54,078us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
SEC Schedule III, Real Estate Investment Property, Net 91,832us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PacificViewMember
     
Panorama Mall        
Initial Cost to Company        
Land 4,373us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Building and Improvements 17,491us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Cost Capitalized Subsequent to Acquisition 9,719us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 4,857us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Buildings and Improvements 24,328us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Equipment and furnishings 475us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Construction in progress 1,923us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
SEC Schedule III, Real Estate, Gross 31,583us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Accumulated Depreciation 9,048us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 22,535us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PanoramaMallMember
     
Paradise Valley Mall        
Initial Cost to Company        
Land 24,565us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Building and Improvements 125,996us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Cost Capitalized Subsequent to Acquisition 42,492us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 35,921us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Buildings and Improvements 154,362us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Equipment and furnishings 2,297us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Construction in progress 473us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
SEC Schedule III, Real Estate, Gross 193,053us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Accumulated Depreciation 57,816us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 135,237us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseValleyMallMember
     
Paradise Village Ground Leases        
Initial Cost to Company        
Land 8,880us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Building and Improvements 2,489us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Cost Capitalized Subsequent to Acquisition (6,876)us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Gross Amount at Which Carried at Close of Period        
Land 3,870us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Buildings and Improvements 623us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
SEC Schedule III, Real Estate, Gross 4,493us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Accumulated Depreciation 281us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
SEC Schedule III, Real Estate Investment Property, Net 4,212us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageGroundLeasesMember
     
Paradise Village office Park II        
Initial Cost to Company        
Land 1,150us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Building and Improvements 1,790us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Cost Capitalized Subsequent to Acquisition 3,222us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Gross Amount at Which Carried at Close of Period        
Land 2,300us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Buildings and Improvements 3,583us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Equipment and furnishings 279us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
SEC Schedule III, Real Estate, Gross 6,162us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Accumulated Depreciation 2,158us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
SEC Schedule III, Real Estate Investment Property, Net 4,004us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ParadiseVillageOfficeParkIIMember
     
Promenade at Casa Grande        
Initial Cost to Company        
Land 15,089us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Cost Capitalized Subsequent to Acquisition 84,999us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Gross Amount at Which Carried at Close of Period        
Land 8,851us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Buildings and Improvements 91,170us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Equipment and furnishings 67us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
SEC Schedule III, Real Estate, Gross 100,088us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Accumulated Depreciation 32,259us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
SEC Schedule III, Real Estate Investment Property, Net 67,829us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_PromenadeAtCasaGrandeMember
     
Queens Center        
Initial Cost to Company        
Land 251,474us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Building and Improvements 1,039,922us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Cost Capitalized Subsequent to Acquisition 243us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 251,474us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Buildings and Improvements 1,039,424us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Equipment and furnishings 104us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Construction in progress 637us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
SEC Schedule III, Real Estate, Gross 1,291,639us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Accumulated Depreciation 4,476us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 1,287,163us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_QueensCenterMember
     
Santa Monica Place        
Initial Cost to Company        
Land 26,400us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Building and Improvements 105,600us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Cost Capitalized Subsequent to Acquisition 299,484us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Gross Amount at Which Carried at Close of Period        
Land 44,292us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Buildings and Improvements 359,222us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Equipment and furnishings 7,901us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Construction in progress 20,069us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
SEC Schedule III, Real Estate, Gross 431,484us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
Accumulated Depreciation 66,589us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
SEC Schedule III, Real Estate Investment Property, Net 364,895us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SantaMonicaPlaceMember
     
San Tan Adjacent Land        
Initial Cost to Company        
Land 29,414us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Cost Capitalized Subsequent to Acquisition 6,505us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Gross Amount at Which Carried at Close of Period        
Land 30,506us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Buildings and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Equipment and furnishings 0us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Construction in progress 5,413us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
SEC Schedule III, Real Estate, Gross 35,919us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
Accumulated Depreciation 0us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
SEC Schedule III, Real Estate Investment Property, Net 35,919us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanAdjacentLandMember
     
San Tan Village Regional Center        
Initial Cost to Company        
Land 7,827us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Cost Capitalized Subsequent to Acquisition 193,020us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 6,344us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Buildings and Improvements 193,478us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Equipment and furnishings 1,025us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
SEC Schedule III, Real Estate, Gross 200,847us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Accumulated Depreciation 71,474us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 129,373us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_SanTanVillageRegionalCenterMember
     
Valley River Center        
Initial Cost to Company        
Land 24,854us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Building and Improvements 147,715us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Cost Capitalized Subsequent to Acquisition 20,124us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Gross Amount at Which Carried at Close of Period        
Land 24,854us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Buildings and Improvements 166,096us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Equipment and furnishings 1,743us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
SEC Schedule III, Real Estate, Gross 192,693us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Accumulated Depreciation 44,199us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
SEC Schedule III, Real Estate Investment Property, Net 148,494us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_ValleyRiverCenterMember
     
Victor Valley, Mall of        
Initial Cost to Company        
Land 15,700us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Building and Improvements 75,230us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Cost Capitalized Subsequent to Acquisition 50,537us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Gross Amount at Which Carried at Close of Period        
Land 20,080us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Buildings and Improvements 119,247us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Equipment and furnishings 2,140us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
SEC Schedule III, Real Estate, Gross 141,467us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Accumulated Depreciation 34,332us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
SEC Schedule III, Real Estate Investment Property, Net 107,135us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VictorValleyMallOfMember
     
Vintage Faire Mall        
Initial Cost to Company        
Land 14,902us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Building and Improvements 60,532us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Cost Capitalized Subsequent to Acquisition 55,147us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Gross Amount at Which Carried at Close of Period        
Land 17,647us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Buildings and Improvements 111,432us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Equipment and furnishings 1,502us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Construction in progress 0us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
SEC Schedule III, Real Estate, Gross 130,581us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Accumulated Depreciation 56,694us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
SEC Schedule III, Real Estate Investment Property, Net 73,887us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_VintageFaireMallMember
     
Washington Square        
Initial Cost to Company        
Land 89,659us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Building and Improvements 652,310us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Cost Capitalized Subsequent to Acquisition 454us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Gross Amount at Which Carried at Close of Period        
Land 89,886us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Buildings and Improvements 650,155us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Equipment and furnishings 151us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Construction in progress 2,231us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
SEC Schedule III, Real Estate, Gross 742,423us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Accumulated Depreciation 3,016us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
SEC Schedule III, Real Estate Investment Property, Net 739,407us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WashingtonSquareMember
     
Westside Pavilion        
Initial Cost to Company        
Land 34,100us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Building and Improvements 136,819us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Cost Capitalized Subsequent to Acquisition 70,923us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Gross Amount at Which Carried at Close of Period        
Land 34,100us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Buildings and Improvements 201,490us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Equipment and furnishings 5,876us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Construction in progress 376us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
SEC Schedule III, Real Estate, Gross 241,842us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Accumulated Depreciation 88,683us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
SEC Schedule III, Real Estate Investment Property, Net 153,159us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WestsidePavilionMember
     
Wilton Mall Member        
Initial Cost to Company        
Land 19,743us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Building and Improvements 67,855us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Cost Capitalized Subsequent to Acquisition 19,653us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Gross Amount at Which Carried at Close of Period        
Land 19,810us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Buildings and Improvements 86,190us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Equipment and furnishings 1,117us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Construction in progress 134us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
SEC Schedule III, Real Estate, Gross 107,251us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Accumulated Depreciation 24,438us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
SEC Schedule III, Real Estate Investment Property, Net 82,813us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_WiltonMallMemberMember
     
Mervyn's        
Initial Cost to Company        
Land 10,094us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Building and Improvements 68,660us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Cost Capitalized Subsequent to Acquisition 12,738us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Gross Amount at Which Carried at Close of Period        
Land 9,449us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Buildings and Improvements 73,481us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Equipment and furnishings 456us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Construction in progress 8,106us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
SEC Schedule III, Real Estate, Gross 91,492us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Accumulated Depreciation 19,373us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
SEC Schedule III, Real Estate Investment Property, Net 72,119us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_MervynsMember
     
Other Assets and Development Properties        
Initial Cost to Company        
Land 49,913us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Building and Improvements 0us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Equipment and Furnishings 0mac_RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Cost Capitalized Subsequent to Acquisition 34,868us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Gross Amount at Which Carried at Close of Period        
Land 37,573us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Buildings and Improvements 14,401us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Equipment and furnishings 113us-gaap_FixturesAndEquipmentGross
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Construction in progress 32,694us-gaap_DevelopmentInProcess
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
SEC Schedule III, Real Estate, Gross 84,781us-gaap_RealEstateGrossAtCarryingValue
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
Accumulated Depreciation 5,902us-gaap_RealEstateAccumulatedDepreciation
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember
     
SEC Schedule III, Real Estate Investment Property, Net $ 78,879us-gaap_SECScheduleIIIRealEstateInvestmentPropertyNet
/ us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis
= mac_OtherAssetsAndDevelopmentPropertiesMember