XML 77 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
Mortgage Notes Payable - Schedule of Mortgage Notes Payable (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Nov. 14, 2014
Feb. 19, 2015
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party $ 286,849,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent $ 289,039,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent    
Carrying Amount of Mortgage Notes, Other 5,200,053,000mac_SecuredDebtNonrelatedParty 5,115,482,000mac_SecuredDebtNonrelatedParty    
Arrowhead Towne Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 226,844,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		 228,703,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		    
Effective Interest Rate (as a percent) 2.76%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		      
Monthly Debt Service 1,131,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_ArrowheadTowneCenterMortgageMember		      
Chandler Fashion Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 200,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		 200,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		    
Effective Interest Rate (as a percent) 3.77%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		      
Monthly Debt Service 625,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_ChandlerFashionCenterMortgageMember		      
Danbury Fair Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 113,526,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		 114,265,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 113,526,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		 114,264,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		    
Effective Interest Rate (as a percent) 5.53%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		      
Monthly Debt Service 1,538,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_DanburyFairMallMortgageMember		      
Deptford Mall One        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		    
Carrying Amount of Mortgage Notes, Other 196,815,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		 197,815,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		    
Effective Interest Rate (as a percent) 3.76%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		      
Monthly Debt Service 947,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageOneMember		      
Deptford Mall Two        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		    
Carrying Amount of Mortgage Notes, Other 14,212,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		 14,285,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		    
Effective Interest Rate (as a percent) 6.46%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		      
Monthly Debt Service 101,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_DeptfordMallMortgageTwoMember		      
Eastland Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 168,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		 168,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		    
Effective Interest Rate (as a percent) 5.79%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		      
Monthly Debt Service 811,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_EastlandMallMortgageMember		      
Fashion Outlets of Chicago        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		    
Carrying Amount of Mortgage Notes, Other 200,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		 119,329,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		    
Effective Interest Rate (as a percent) 1.83%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		 2.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		    
Monthly Debt Service 278,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsOfChicagoMortgageMember		      
Fashion Outlets of Niagara Falls USA        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		    
Carrying Amount of Mortgage Notes, Other 120,672,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		 121,376,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		    
Effective Interest Rate (as a percent) 4.89%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		      
Monthly Debt Service 727,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_FashionOutletsAtNiagaraMortgageMember		      
Flagstaff Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 37,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		 37,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		    
Effective Interest Rate (as a percent) 5.03%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		      
Monthly Debt Service 151,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_FlagstaffMallMortgageMember		      
FlatIron Crossing        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		    
Carrying Amount of Mortgage Notes, Other 259,828,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		 261,494,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		    
Effective Interest Rate (as a percent) 3.90%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		      
Monthly Debt Service 1,393,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_FlatIronCrossingMortgageMember		      
Freehold Raceway Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 228,222,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		 229,244,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		    
Effective Interest Rate (as a percent) 4.20%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		      
Monthly Debt Service 1,132,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_FreeholdRacewayMallMortgageMember		      
Great Northern Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 34,232,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		 34,494,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		    
Effective Interest Rate (as a percent) 6.54%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		      
Monthly Debt Service 234,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_GreatNorthernMallMortgageMember		      
Green Acres Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 311,859,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		 313,514,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		    
Effective Interest Rate (as a percent) 3.61%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		      
Monthly Debt Service 1,447,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_GreenAcresMallMortgageMember		      
Kings Plaza        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		    
Carrying Amount of Mortgage Notes, Other 478,204,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		 480,761,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		    
Effective Interest Rate (as a percent) 3.67%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		      
Monthly Debt Service 2,229,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_KingsPlazaMortgageMember		      
Lakewood Center Mortgage        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_LakewoodCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_LakewoodCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 0mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_LakewoodCenterMortgageMember		 253,708,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_LakewoodCenterMortgageMember		    
Monthly Debt Service 0us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_LakewoodCenterMortgageMember		      
Los Cerritos Center Mortgage        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 102,175,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		 103,274,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 102,176,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		 103,274,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		    
Effective Interest Rate (as a percent) 1.65%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		      
Monthly Debt Service 1,009,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_LosCerritosCenterMortgageMember		      
The Mall at Northgate        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		    
Carrying Amount of Mortgage Notes, Other 64,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		 64,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		    
Effective Interest Rate (as a percent) 3.06%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		 3.05%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		    
Monthly Debt Service 130,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_TheMallAtNorthgateMortgageMember		      
The Oaks        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		    
Carrying Amount of Mortgage Notes, Other 209,161,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		 210,197,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		    
Effective Interest Rate (as a percent) 4.14%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		      
Monthly Debt Service 1,064,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_TheOaksOneMortgageMember		      
Pacific View        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		    
Carrying Amount of Mortgage Notes, Other 132,525,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		 133,200,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		    
Effective Interest Rate (as a percent) 4.08%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		      
Monthly Debt Service 668,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_PacificViewMortgageMember		      
Queens Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		    
Carrying Amount of Mortgage Notes, Other 600,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		 600,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		    
Effective Interest Rate (as a percent) 3.49%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		      
Monthly Debt Service 1,744,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_QueensCenterMember		      
Santa Monica Place        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		    
Carrying Amount of Mortgage Notes, Other 229,022,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		 230,344,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		    
Effective Interest Rate (as a percent) 2.99%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		      
Monthly Debt Service 1,004,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_SantaMonicaPlaceMortgageMember		      
SanTan Village Regional Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 133,073,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		 133,807,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		    
Effective Interest Rate (as a percent) 3.14%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		      
Monthly Debt Service 589,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_SanTanVillageRegionalCenterMortgageMember		      
Stonewood Center Mortgage        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 109,869,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		 111,297,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		    
Effective Interest Rate (as a percent)     1.80%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		  
Monthly Debt Service 640,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_StonewoodCenterMortgageMember		      
Superstition Springs Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		    
Carrying Amount of Mortgage Notes, Other 68,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		 68,079,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		    
Effective Interest Rate (as a percent) 2.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		 1.98%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		    
Monthly Debt Service 139,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_SuperstitionSpringsCenterMember		      
Towne Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 22,504,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		 22,607,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		    
Effective Interest Rate (as a percent) 4.48%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		      
Monthly Debt Service 117,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_TowneMallMortgageMember		      
Tucson La Encantada        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 71,148,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		 71,500,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		    
Carrying Amount of Mortgage Notes, Other 0mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		 0mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		    
Effective Interest Rate (as a percent) 4.23%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		      
Monthly Debt Service 368,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_TucsonLaEncantadaMortgageMember		      
Valley Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		    
Carrying Amount of Mortgage Notes, Other 41,155,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		 41,368,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		    
Effective Interest Rate (as a percent) 5.85%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		      
Monthly Debt Service 280,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_ValleyMallMortgageMember		      
Valley River Center        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		    
Carrying Amount of Mortgage Notes, Other 120,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		 120,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		    
Effective Interest Rate (as a percent) 5.59%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		      
Monthly Debt Service 558,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_ValleyRiverCenterMortgageMember		      
Mall of Victor Valley        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		    
Carrying Amount of Mortgage Notes, Other 115,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		 115,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		    
Effective Interest Rate (as a percent) 4.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		      
Monthly Debt Service 380,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_MallOfVictorValleyMortgageMember		      
Vintage Faire Mall        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		   280,000,000us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember
Carrying Amount of Mortgage Notes, Other 280,000,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		 0mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		    
Effective Interest Rate (as a percent) 3.55%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		      
Monthly Debt Service 1,256,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_VintageFaireMallMortgageMember		      
Washington Square Mortgage        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		    
Carrying Amount of Mortgage Notes, Other 235,206,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		 238,696,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		    
Effective Interest Rate (as a percent) 1.65%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		      
Monthly Debt Service 1,499,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_WashingtonSquareMortgageMember		      
Westside Pavilion        
Mortgage loans payable on real estate        
Carrying Amount of Mortgage Notes, Related Party 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember		 0us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember		    
Carrying Amount of Mortgage Notes, Other 148,948,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember		 149,626,000mac_SecuredDebtNonrelatedParty
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember		    
Effective Interest Rate (as a percent) 4.49%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember		      
Monthly Debt Service $ 783,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mac_WestsidePavilionMortgageMember