XML 44 R61.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Mortgage Notes Payable: (Details) (USD $) | 12 Months Ended | 0 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Nov. 14, 2014 | Sep. 30, 2009 | Dec. 22, 2014 | Jan. 03, 2013 | Nov. 10, 2014 | Feb. 07, 2014 loan | Aug. 28, 2014
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | $ 289,039,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent | $ 269,381,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent |  |  |  |  |  |  |  |
Others | 5,115,482,000 mac_SecuredDebtNonrelatedParty | 4,145,809,000 mac_SecuredDebtNonrelatedParty |  |  |  |  |  |  |  |
Debt premiums (discounts), net | 56,921,000 us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet | 23,766,000 us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities | 1,414,659,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 | 257,064,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 | 420,123,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 |  |  |  |  |  |  |
Loss (gain) on early extinguishment of debt, net | 526,000 us-gaap_GainsLossesOnExtinguishmentOfDebt | (1,432,000)us-gaap_GainsLossesOnExtinguishmentOfDebt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt |  |  |  |  |  |  |
Probable recourse amount | 73,165,000 mac_MortgageNotesPayableProbableRecourseAmount | 77,192,000 mac_MortgageNotesPayableProbableRecourseAmount |  |  |  |  |  |  |  |
Interest expense capitalized | 12,559,000 us-gaap_InterestCostsCapitalized | 10,829,000 us-gaap_InterestCostsCapitalized | 10,703,000 us-gaap_InterestCostsCapitalized |  |  |  |  |  |  |
Fair value of mortgage notes payable | 5,455,453,000 us-gaap_NotesPayableFairValueDisclosure | 4,500,177,000 us-gaap_NotesPayableFairValueDisclosure |  |  |  |  |  |  |  |
PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 672,109,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember |  |  |  |  |  |
Freehold Raceway Mall and Chandler Fashion Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Interest in the loan assumed by a third party (as a percent) |  |  |  |  | 49.90%mac_PercentageOfLoanAssumedByThirdParty / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = mac_FreeholdRacewayMallAndChandlerFashionCenterMember |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  | 49.90%mac_JointVentureOwnershipPercentageSold / us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis = mac_FreeholdRacewayMallAndChandlerFashionCenterMember |  |  |  |  |
Arrowhead Towne Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember |  |  |  |  |  |  |  |
Others | 228,703,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember | 236,028,000 mac_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 | 1,131,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 11,568,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember | 14,642,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_ArrowheadTowneCenterMortgageMember |  |  |  |  |  |  |  |
Camelback Colonnade |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember |  |  |  |  |  |  |  |
Others | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember | 49,120,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember |  |  |  |  |  |  |  |  |
Monthly Debt Service | 0 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember |  |  |  |  |  |  |  |  |
Debt premiums | 0 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember | 2,120,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_CamelbackColonnadeMember |  |  |  |  |  |  |  |
Chandler Fashion Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ChandlerFashionCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ChandlerFashionCenterMortgageMember |  |  |  |  |  |  |  |
Others | 200,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_ChandlerFashionCenterMortgageMember | 200,000,000 mac_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 | 625,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_ChandlerFashionCenterMortgageMember |  |  |  |  |  |  |  |  |
Danbury Fair Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 114,265,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DanburyFairMallMortgageMember | 117,120,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DanburyFairMallMortgageMember |  |  |  |  |  |  |  |
Others | 114,264,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_DanburyFairMallMortgageMember | 117,120,000 mac_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 | 1,538,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_DanburyFairMallMortgageMember |  |  |  |  |  |  |  |  |
Deptford Mall One |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember |  |  |  |  |  |  |  |
Others | 197,815,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember | 201,622,000 mac_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 | 947,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember |  |  |  |  |  |  |  |  |
Debt discounts | (8,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember | (14,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageOneMember |  |  |  |  |  |  |  |
Deptford Mall Two |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageTwoMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageTwoMember |  |  |  |  |  |  |  |
Others | 14,285,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageTwoMember | 14,551,000 mac_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 | 101,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_DeptfordMallMortgageTwoMember |  |  |  |  |  |  |  |  |
Eastland Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_EastlandMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_EastlandMallMortgageMember |  |  |  |  |  |  |  |
Others | 168,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_EastlandMallMortgageMember | 168,000,000 mac_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 | 811,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_EastlandMallMortgageMember |  |  |  |  |  |  |  |  |
Fashion Outlets of Chicago |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |
Others | 119,329,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember | 91,383,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 2.97%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember | 2.96%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 259,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |  |
Debt issued | 140,000,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |  |
Reference rate for variable interest rate | LIBOR |  |  |  |  |  |  |  |  |
Interest rate spread over basis (as a percent) | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = mac_FashionOutletsOfChicagoMortgageMember |  |  |  |  |  |  |  |  |
Fashion Outlets of Niagara Falls USA |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember |  |  |  |  |  |  |  |
Others | 121,376,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember | 124,030,000 mac_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 | 727,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 5,414,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember | 6,342,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_FashionOutletsAtNiagaraMortgageMember |  |  |  |  |  |  |  |
Flagstaff Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FlagstaffMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FlagstaffMallMortgageMember |  |  |  |  |  |  |  |
Others | 37,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FlagstaffMallMortgageMember | 37,000,000 mac_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 | 151,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FlagstaffMallMortgageMember |  |  |  |  |  |  |  |  |
FlatIron Crossing |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FlatIronCrossingMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FlatIronCrossingMortgageMember |  |  |  |  |  |  |  |
Others | 261,494,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FlatIronCrossingMortgageMember | 268,000,000 mac_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 | 1,393,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FlatIronCrossingMortgageMember |  |  |  |  |  |  |  |  |
Freehold Raceway Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FreeholdRacewayMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FreeholdRacewayMallMortgageMember |  |  |  |  |  |  |  |
Others | 229,244,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FreeholdRacewayMallMortgageMember | 232,900,000 mac_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 | 1,132,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FreeholdRacewayMallMortgageMember |  |  |  |  |  |  |  |  |
Fresno Fashion Fair |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember | 79,391,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember |  |  |  |  |  |  |  |
Others | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember | 79,390,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember |  |  |  |  |  |  |  |  |
Monthly Debt Service | 0 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember |  |  |  |  |  |  |  |  |
Loss (gain) on early extinguishment of debt, net |  |  |  |  |  | 5,796,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = mac_FresnoFashionFairMortgageMember |  |  |  |
Great Northern Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_GreatNorthernMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_GreatNorthernMallMortgageMember |  |  |  |  |  |  |  |
Others | 34,494,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_GreatNorthernMallMortgageMember | 35,484,000 mac_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 | 234,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_GreatNorthernMallMortgageMember |  |  |  |  |  |  |  |  |
Green Acres Mall Mortgage |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_GreenAcresMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_GreenAcresMallMortgageMember |  |  |  |  |  |  |  |
Others | 313,514,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_GreenAcresMallMortgageMember | 319,850,000 mac_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 | 1,447,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_GreenAcresMallMortgageMember |  |  |  |  |  |  |  |  |
Kings Plaza Shopping Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_KingsPlazaMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_KingsPlazaMortgageMember |  |  |  |  |  |  |  |
Others | 480,761,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_KingsPlazaMortgageMember | 490,548,000 mac_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 | 2,229,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_KingsPlazaMortgageMember |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  | 146,000,000 us-gaap_ProceedsFromIssuanceOfDebt / us-gaap_DebtInstrumentAxis = mac_KingsPlazaMortgageMember |  |  |
Lakewood Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |  |  |
Others | 253,708,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 1,127,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 3,708,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember | 0 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |  |  |
Lakewood Center | PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 1.80%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 254,880,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_LakewoodCenterMortgageMember |  |  |  |  |  |
Los Cerritos Center Mortgage |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 103,274,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |  |  |
Others | 103,274,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 1,009,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 17,965,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember | 0 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |  |  |
Los Cerritos Center Mortgage | PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 1.65%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 207,528,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_LosCerritosCenterMortgageMember |  |  |  |  |  |
Northgate Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember |  |  |  |  |  |  |  |
Others | 64,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember | 64,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 3.05%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember | 3.04%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 128,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember |  |  |  |  |  |  |  |  |
Reference rate for variable interest rate | LIBOR |  |  |  |  |  |  |  |  |
Interest rate spread over basis (as a percent) | 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = mac_TheMallAtNorthgateMortgageMember |  |  |  |  |  |  |  |  |
Oaks, The |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TheOaksOneMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TheOaksOneMortgageMember |  |  |  |  |  |  |  |
Others | 210,197,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_TheOaksOneMortgageMember | 214,239,000 mac_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 | 1,064,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_TheOaksOneMortgageMember |  |  |  |  |  |  |  |  |
Pacific View |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_PacificViewMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_PacificViewMortgageMember |  |  |  |  |  |  |  |
Others | 133,200,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_PacificViewMortgageMember | 135,835,000 mac_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 | 668,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_PacificViewMortgageMember |  |  |  |  |  |  |  |  |
Queens Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember |  |  |  |  |  |  |  |
Others | 600,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember |  |  |  |  |  |  |  |
Monthly Debt Service | 1,744,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember |  |  |  |  |  |  |  |  |
Queens Center | PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 3.49%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember |  |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 600,000,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_QueensCenterMember |  |  |  |  |  |
Santa Monica Place |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SantaMonicaPlaceMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SantaMonicaPlaceMortgageMember |  |  |  |  |  |  |  |
Others | 230,344,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SantaMonicaPlaceMortgageMember | 235,445,000 mac_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 | 1,004,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_SantaMonicaPlaceMortgageMember |  |  |  |  |  |  |  |  |
SanTan Village Regional Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SanTanVillageRegionalCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SanTanVillageRegionalCenterMortgageMember |  |  |  |  |  |  |  |
Others | 133,807,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SanTanVillageRegionalCenterMortgageMember | 136,629,000 mac_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 | 589,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_SanTanVillageRegionalCenterMortgageMember |  |  |  |  |  |  |  |  |
South Plains Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |  |  |  |  |  |  |  |
Others | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember | 99,833,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |  |  |  |  |  |  |  |  |
Number of loans |  |  |  |  |  |  |  |  | 2 us-gaap_MortgageLoansOnRealEstateNumberOfLoans / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |
Monthly Debt Service | 0 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |  |  |  |  |  |  |  |  |
Loss (gain) on early extinguishment of debt, net |  |  |  |  |  |  |  | 163,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember | 359,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = mac_SouthPlainsMallMortgageMember |
Stonewood Center Mortgage |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |  |  |
Others | 111,297,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 640,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 7,980,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember | 0 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |  |  |
Stonewood Center Mortgage | PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) |  |  |  | 1.80%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 111,910,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_StonewoodCenterMortgageMember |  |  |  |  |  |
Superstition Springs Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |
Others | 68,079,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember | 68,395,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 1.98%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember | 2.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |
Monthly Debt Service | 138,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |  |
Debt premiums | 579,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember | 895,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |
Reference rate for variable interest rate | LIBOR |  |  |  |  |  |  |  |  |
Interest rate spread over basis (as a percent) | 2.30%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = mac_SuperstitionSpringsCenterMember |  |  |  |  |  |  |  |  |
Towne Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TowneMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TowneMallMortgageMember |  |  |  |  |  |  |  |
Others | 22,607,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_TowneMallMortgageMember | 22,996,000 mac_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 | 117,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_TowneMallMortgageMember |  |  |  |  |  |  |  |  |
Tucson La Encantada |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 71,500,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TucsonLaEncantadaMortgageMember | 72,870,000 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_TucsonLaEncantadaMortgageMember |  |  |  |  |  |  |  |
Others | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_TucsonLaEncantadaMortgageMember | 0 mac_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 | 368,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_TucsonLaEncantadaMortgageMember |  |  |  |  |  |  |  |  |
Valley Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember |  |  |  |  |  |  |  |
Others | 41,368,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember | 42,155,000 mac_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 | 280,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember |  |  |  |  |  |  |  |  |
Debt discounts | (132,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember | (219,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = mac_ValleyMallMortgageMember |  |  |  |  |  |  |  |
Valley River Center |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ValleyRiverCenterMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_ValleyRiverCenterMortgageMember |  |  |  |  |  |  |  |
Others | 120,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_ValleyRiverCenterMortgageMember | 120,000,000 mac_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 | 558,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_ValleyRiverCenterMortgageMember |  |  |  |  |  |  |  |  |
Victor Valley, Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_MallOfVictorValleyMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_MallOfVictorValleyMortgageMember |  |  |  |  |  |  |  |
Others | 115,000,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_MallOfVictorValleyMortgageMember | 90,000,000 mac_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 | 380,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_MallOfVictorValleyMortgageMember |  |  |  |  |  |  |  |  |
Loss (gain) on early extinguishment of debt, net |  |  |  |  |  |  |  |  |  | (47,000)us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = mac_MallOfVictorValleyMortgageMember
Vintage Faire Mall |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember |  |  |  |  |  |  |  |
Others | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember | 99,083,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 0.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember |  |  |  |  |  |  |  |  |
Monthly Debt Service | 0 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember |  |  |  |  |  |  |  |  |
Loss (gain) on early extinguishment of debt, net |  |  |  |  |  | 3,186,000 us-gaap_GainsLossesOnExtinguishmentOfDebt / us-gaap_DebtInstrumentAxis = mac_VintageFaireMallMortgageMember |  |  |  |
Washington Square |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |  |  |
Others | 238,696,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember | 0 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |  |  |
Monthly Debt Service | 1,499,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |  |  |  |
Debt premiums | 9,847,000 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember | 0 us-gaap_DebtInstrumentUnamortizedPremium / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |  |  |
Washington Square | PPRLP Queens Portfolio |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Effective Interest Rate (as a percent) | 1.65%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |  |  |  |
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities |  |  |  | 240,341,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_BusinessAcquisitionAxis = mac_PPRLPQueensPortfolioMember / us-gaap_DebtInstrumentAxis = mac_WashingtonSquareMortgageMember |  |  |  |  |  |
Westside Pavilion |  |  |  |  |  |  |  |  |  |
Mortgage loans payable on real estate |  |  |  |  |  |  |  |  |  |
Carrying amount of mortgage notes, related party | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_WestsidePavilionMortgageMember | 0 us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent / us-gaap_DebtInstrumentAxis = mac_WestsidePavilionMortgageMember |  |  |  |  |  |  |  |
Others | 149,626,000 mac_SecuredDebtNonrelatedParty / us-gaap_DebtInstrumentAxis = mac_WestsidePavilionMortgageMember | 152,173,000 mac_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 | $ 783,000 us-gaap_DebtInstrumentPeriodicPayment / us-gaap_DebtInstrumentAxis = mac_WestsidePavilionMortgageMember |  |  |  |  |  |  |  |  |

X
- Definition The percentage of ownership interest in the joint venture sold by the entity during the period. + References No definition available. + Details
Name: | mac_JointVentureOwnershipPercentageSold
Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of mortgage notes payable which could become recourse to the entity. + References No definition available. + Details
Name: | mac_MortgageNotesPayableProbableRecourseAmount
Namespace Prefix: | mac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Portion of the loan assumed by a third party. + References No definition available. + Details
Name: | mac_PercentageOfLoanAssumedByThirdParty
Namespace Prefix: | mac_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations such as mortgage loans. + References No definition available. + Details
Name: | mac_SecuredDebtNonrelatedParty
Namespace Prefix: | mac_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentUnamortizedPremium
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest capitalized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Allowance for Funds Used during Construction -URI http://asc.fasb.org/extlink&oid=6504829 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestCostsCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indicates the number of mortgages under each classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.3) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Paragraph 3 -Article 12 + Details
Name: | us-gaap_MortgageLoansOnRealEstateNumberOfLoans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
Name: | us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesPayableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount for notes payable (written promise to pay), due to related parties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 7 + Details
Name: | us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References No definition available. + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mac_PPRLPQueensPortfolioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_ArrowheadTowneCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_CamelbackColonnadeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_ChandlerFashionCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_DanburyFairMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_DeptfordMallMortgageOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_DeptfordMallMortgageTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_EastlandMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FashionOutletsAtNiagaraMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FashionOutletsOfChicagoMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FlagstaffMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FlatIronCrossingMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FreeholdRacewayMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_FresnoFashionFairMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_GreatNorthernMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_GreenAcresMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_KingsPlazaMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_LakewoodCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_LosCerritosCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_MallOfVictorValleyMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_PacificViewMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_QueensCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_SantaMonicaPlaceMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_SanTanVillageRegionalCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_SouthPlainsMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_StonewoodCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_SuperstitionSpringsCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_TheMallAtNorthgateMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_TheOaksOneMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_TowneMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_TucsonLaEncantadaMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_ValleyMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_ValleyRiverCenterMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_VintageFaireMallMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_WashingtonSquareMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mac_WestsidePavilionMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=mac_FreeholdRacewayMallAndChandlerFashionCenterMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |