$MAC
Macerich Co Stock $mac

$mac Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000091224214000003 Filed on February 21, 2014

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$229.2M	$195.8M	$185.1M
YoY Change	9.94%	1.28%	2.07%
Cost Of Revenue	$85.20M	$84.00M	$83.30M
YoY Change	3.15%	0.84%	4.13%
Gross Profit	$119.4M	$120.1M	$107.2M
YoY Change	-5.16%	9.18%	5.82%
Gross Profit Margin	52.09%	61.34%	57.93%
Selling, General & Admin	$5.200M	$5.100M	$5.700M
YoY Change	0.0%	13.33%	54.05%
% of Gross Profit	4.36%	4.25%	5.32%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$88.30M	$77.60M	$75.80M
YoY Change	19.65%	8.68%	9.22%
% of Gross Profit	73.95%	64.61%	70.71%
Operating Expenses	$75.70M	$73.70M	$72.50M
YoY Change	4.7%	7.12%	12.06%
Operating Profit	$43.70M	$46.40M	$34.70M
YoY Change	-18.47%	12.62%	-5.19%
Interest Expense	-$28.40M	$41.57M	$43.30M
YoY Change	-116.15%	-5.02%	-1.75%
% of Operating Profit	-64.99%	89.58%	124.78%
Other Income/Expense, Net	-$2.100M	-$2.100M	-$1.300M
YoY Change	5.0%	61.54%	8.33%
Pretax Income	$202.0M	$44.00M	$9.300M
YoY Change	1.15%	155.81%	-47.75%
Income Tax	-$2.000M	-$934.0K	-$3.075M
% Of Pretax Income	-0.99%	-2.12%	-33.06%
Net Earnings	$174.2M	$47.28M	$144.5M
YoY Change	6.81%	231.61%	-791.23%
Net Earnings / Revenue	76.0%	24.14%	78.11%
Basic Earnings Per Share	$1.27	$0.33	$1.00
Diluted Earnings Per Share	$1.27	$0.33	$1.00
COMMON SHARES
Basic Shares Outstanding		134.2M shares
Diluted Shares Outstanding		134.3M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$66.00M	$77.00M	$90.00M
YoY Change	-1.49%	-44.6%	23.29%
Cash & Equivalents	$65.79M	$76.55M	$89.80M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$121.0M	$116.0M	$102.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$187.0M	$193.0M	$192.0M
YoY Change	4.47%	-18.91%	16.36%
LONG-TERM ASSETS
Property, Plant & Equipment	$7.480B	$5.942B	$5.945B
YoY Change	23.05%	1.97%	5.78%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$974.3M	$1.027B	$1.121B
YoY Change	-11.31%	-8.82%	-8.95%
Other Assets	$122.0M	$95.00M	$93.00M
YoY Change	11.93%	-20.17%	-30.08%
Total Long-Term Assets	$9.124B	$7.417B	$7.539B
YoY Change	17.59%	0.35%	3.49%
TOTAL ASSETS
Total Short-Term Assets	$187.0M	$193.0M	$192.0M
Total Long-Term Assets	$9.124B	$7.417B	$7.539B
Total Assets	$9.311B	$7.610B	$7.731B
YoY Change	17.29%	-0.25%	3.77%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$70.00M	$75.00M	$58.00M
YoY Change	-4.11%	-13.79%	-17.14%
Accrued Expenses	$318.0M	$278.0M	$270.0M
YoY Change	6.35%	-3.47%	9.31%
Deferred Revenue
YoY Change
Short-Term Debt	$824.0M	$404.0M	$764.0M
YoY Change	-6.15%	-54.61%	-2.3%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.212B	$757.0M	$1.092B
YoY Change	-3.04%	-40.16%	-0.64%
LONG-TERM LIABILITIES
Long-Term Debt	$4.437B	$3.385B	$3.302B
YoY Change	33.32%	6.72%	6.62%
Other Long-Term Liabilities	$245.0M	$182.0M	$199.0M
YoY Change	25.0%	-11.65%	-1.0%
Total Long-Term Liabilities	$4.682B	$3.567B	$3.501B
YoY Change	32.86%	5.6%	6.16%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.212B	$757.0M	$1.092B
Total Long-Term Liabilities	$4.682B	$3.567B	$3.501B
Total Liabilities	$5.895B	$4.324B	$4.593B
YoY Change	23.48%	-11.91%	-1.87%
SHAREHOLDERS EQUITY
Retained Earnings	-$639.7M	-$734.7M
YoY Change	-5.73%
Common Stock	$3.717B	$1.363M
YoY Change	6.45%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.078B	$2.938B	$2.796B
YoY Change
Total Liabilities & Shareholders Equity	$9.311B	$7.610B	$7.731B
YoY Change	17.29%	-0.25%	3.77%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$174.2M	$47.28M	$144.5M
YoY Change	6.81%	231.61%	-791.23%
Depreciation, Depletion And Amortization	$88.30M	$77.60M	$75.80M
YoY Change	19.65%	8.68%	9.22%
Cash From Operating Activities	$95.10M	$111.6M	$58.40M
YoY Change	67.43%	23.18%	20.66%
INVESTING ACTIVITIES
Capital Expenditures	-$1.012B	$38.00M	-$61.70M
YoY Change	-5396.86%	-132.79%	11.57%
Acquisitions
YoY Change
Other Investing Activities	-$43.10M	$45.70M	$140.9M
YoY Change	-7.71%	-64.49%	-305.09%
Cash From Investing Activities	-$1.055B	$83.80M	$79.20M
YoY Change	3722.1%	554.69%	-163.87%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	949.0M	-208.6M	-277.1M
YoY Change	-1035.9%	460.75%	606.89%
NET CHANGE
Cash From Operating Activities	95.10M	111.6M	58.40M
Cash From Investing Activities	-1.055B	83.80M	79.20M
Cash From Financing Activities	949.0M	-208.6M	-277.1M
Net Change In Cash	-10.80M	-13.20M	-139.5M
YoY Change	-85.04%	-119.94%	21.52%
FREE CASH FLOW
Cash From Operating Activities	$95.10M	$111.6M	$58.40M
Capital Expenditures	-$1.012B	$38.00M	-$61.70M
Free Cash Flow	$1.107B	$73.60M	$120.1M
YoY Change	2835.81%	-64.36%	15.81%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	103744000	USD
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	76941000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	70251000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3906148000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3715895000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-3561000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	4139000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-589000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18836000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	14970000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28122000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	2878000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Premiums And Other Receivables AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables	2374000	USD
CY2012	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-5405000	USD
CY2013	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-6726000	USD
CY2011	us-gaap	Amortization Of Above And Below Market Leases AmortizationOfAboveAndBelowMarketLeases	-9723000	USD
CY2013	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-6822000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-1600000	USD
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CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	32456000	USD
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CY2012Q4	us-gaap	Assets Assets	9311209000	USD
CY2011Q2	us-gaap	Business Acquisition Percentage Of Voting Interests Acquired BusinessAcquisitionPercentageOfVotingInterestsAcquired	1
CY2013	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	108417000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	92193000	USD
CY2013	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	1056075000	USD
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CY2012Q4	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss	115729000	USD
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CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	65793000	USD
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CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
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CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	140733683	shares
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CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	140733683	shares
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	1375000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	1407000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	160103000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	337426000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	420090000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	172312000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	366389000	USD
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CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	0	USD
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-23766000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-29864000	USD
CY2013Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	30932000	USD
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CY2013Q4	us-gaap	Deposit Assets DepositAssets	0	USD
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CY2011	us-gaap	Depreciation Nonproduction DepreciationNonproduction	189555000	USD
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CY2012	us-gaap	Depreciation Nonproduction DepreciationNonproduction	216447000	USD
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CY2013Q4	us-gaap	Development In Process DevelopmentInProcess	229169000	USD
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CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	12412000	USD
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CY2013Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	474658000	USD
CY2012Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	516833000	USD
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CY2012	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	29147000	USD
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	8538000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	4065493000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	3731456000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	4065493000	USD
CY2013Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities And Equity EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity	3731456000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	356202000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	195650000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	589917000	USD
CY2013	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	688111000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	831496000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	1024526000	USD
CY2012Q4	us-gaap	Equity Method Investment Underlying Equity In Net Assets EquityMethodInvestmentUnderlyingEquityInNetAssets	304477000	USD
CY2013Q4	us-gaap	Equity Method Investment Underlying Equity In Net Assets EquityMethodInvestmentUnderlyingEquityInNetAssets	-25367000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	974258000	USD
CY2013Q4	us-gaap	Equity Method Investments EquityMethodInvestments	701483000	USD
CY2012	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2011	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	445004000	USD
CY2013	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2012Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	175735000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Asset Acquired In Place Leases FiniteLivedIntangibleAssetAcquiredInPlaceLeases	205651000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	62792000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	89141000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	45236000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	43059000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	12540000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	15623000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	21353000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	29293000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	167104000	USD
CY2012Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	149959000	USD
CY2013Q4	us-gaap	Fixtures And Equipment Gross FixturesAndEquipmentGross	152198000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-390000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-423000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	5390000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1432000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1485000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	21113000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	27772000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	20412000	USD
CY2012Q4	us-gaap	Guarantee Obligations Current Carrying Value GuaranteeObligationsCurrentCarryingValue	28208000	USD
CY2012Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	51171000	USD
CY2013Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	33540000	USD
CY2013Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	USD
CY2012Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	24352000	USD
CY2013Q4	us-gaap	Held To Maturity Securities Restricted HeldToMaturitySecuritiesRestricted	0	USD
CY2012Q4	us-gaap	Held To Maturity Securities Restricted HeldToMaturitySecuritiesRestricted	23667000	USD
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	82197000	USD
CY2011	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	25216000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	159023000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	239442000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	303166000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.07
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.07
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.67
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.67
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.07
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.06
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-70367000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	289936000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	63223000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.49
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	1.94
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.44
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.44
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.49
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	1.94
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	79281000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	294677000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	167580000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-6110000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4159000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1692000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-3981000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-5493000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6650000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	540000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1334000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	2289000	USD
CY2012	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	1181000	USD
CY2011	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-3106000	USD
CY2013	us-gaap	Increase Decrease Due From Affiliates IncreaseDecreaseDueFromAffiliates	-266000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-11797000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	13430000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-747000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2554000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5482000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2651000	USD
CY2011	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	33955000	USD
CY2012	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	30614000	USD
CY2013	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	27669000	USD
CY2012	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-5093000	USD
CY2013	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-5682000	USD
CY2011	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-4101000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17094000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	8081000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-7761000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-70538000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	6164000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-2524000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	63000	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	82000	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	18000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	10829000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	10703000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	11905000	USD
CY2012	us-gaap	Interest Expense InterestExpense	164392000	USD
CY2011	us-gaap	Interest Expense InterestExpense	167249000	USD
CY2013	us-gaap	Interest Expense InterestExpense	197247000	USD
CY2013	us-gaap	Interest Expense Other InterestExpenseOther	182231000	USD
CY2011	us-gaap	Interest Expense Other InterestExpenseOther	150506000	USD
CY2012	us-gaap	Interest Expense Other InterestExpenseOther	149006000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	175902000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	205958000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	181971000	USD
CY2013Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	6555212000	USD
CY2012Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	6417674000	USD
CY2012Q4	us-gaap	Land Land	1572621000	USD
CY2013Q4	us-gaap	Land Land	1707005000	USD
CY2013Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	18862000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	5894958000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	5356533000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9311209000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9075250000	USD
CY2011	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	240537000	USD
CY2013	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	54271000	USD
CY2012	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	338722000	USD
CY2013Q4	us-gaap	Minority Interest MinorityInterest	359968000	USD
CY2013	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	31202000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	25643000	USD
CY2012	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	30694000	USD
CY2013	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	1066000	USD
CY2011	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	42000	USD
CY2012	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	86000	USD
CY2013Q4	us-gaap	Minority Interest Ownership Percentage By Noncontrolling Owners MinorityInterestOwnershipPercentageByNoncontrollingOwners	0.07
CY2013	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:10px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;"></font><font style="font-family:inherit;font-size:10pt;color:#000000;font-weight:bold;text-decoration:none;">Organization</font><font style="font-family:inherit;font-size:10pt;font-weight:bold;">:</font></div><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Macerich Company (the "Company") is involved in the acquisition, ownership, development, redevelopment, management and leasing of regional and community/power shopping centers (the "Centers") located throughout the United States.</font></div><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company commenced operations effective with the completion of its initial public offering on March 16, 1994. As of </font><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:normal;text-decoration:none;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, the Company was the sole general partner of and held a </font><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:normal;text-decoration:none;">93%</font><font style="font-family:inherit;font-size:10pt;"> ownership interest in The Macerich Partnership, L.P. (the "Operating Partnership"). The Company was organized to qualify as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Code").</font></div><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The property management, leasing and redevelopment of the Company's portfolio is provided by the Company's management companies, Macerich Property Management Company, LLC, a single member Delaware limited liability company, Macerich Management Company, a California corporation, Macerich Arizona Partners LLC, a single member Arizona limited liability company, Macerich Arizona Management LLC, a single member Delaware limited liability company, Macerich Partners of Colorado, LLC, a Colorado limited liability company, MACW Mall Management, Inc., a New York corporation, and MACW Property Management, LLC, a single member New York limited liability company. All </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">seven</font><font style="font-family:inherit;font-size:10pt;"> of the management companies are collectively referred to herein as the "Management Companies."</font></div></div>
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	610623000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-403596000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-689980000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	271867000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-212086000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-963374000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	351296000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	237285000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	422035000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28869000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28963000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12209000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	156866000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	420090000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	337426000	USD
CY2013Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	38123000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	174247000	USD
CY2013Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18092000	USD
CY2013Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	144878000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	133354000	USD
CY2013Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	218997000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-14068000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	43893000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	192566000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	420123000	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	257064000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	74717000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	0	USD
CY2013	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	0	USD
CY2012	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	USD
CY2011	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	56952000	USD
CY2013	us-gaap	Noncash Or Part Noncash Divestiture Amount Of Consideration Received1 NoncashOrPartNoncashDivestitureAmountOfConsiderationReceived1	0	USD
CY2012Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	4567658000	USD
CY2013Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	4500177000	USD
CY2012Q4	us-gaap	Notes Payable Related Parties Current And Noncurrent NotesPayableRelatedPartiesCurrentAndNoncurrent	274609000	USD
CY2013Q4	us-gaap	Notes Payable Related Parties Current And Noncurrent NotesPayableRelatedPartiesCurrentAndNoncurrent	269381000	USD
CY2013	us-gaap	Notes Reduction NotesReduction	84000000	USD
CY2011	us-gaap	Notes Reduction NotesReduction	38968000	USD
CY2012	us-gaap	Notes Reduction NotesReduction	185000000	USD
CY2013Q4	us-gaap	Number Of Countries In Which Entity Operates NumberOfCountriesInWhichEntityOperates	1	area
CY2013	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	369416000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	15339000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	11263000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	15378000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	15393000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	15356000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	296687000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	3249054000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	561833000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	308827000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	371638000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	433776000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	491261000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	1081719000	USD
CY2011	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	381274000	USD
CY2013	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	578113000	USD
CY2012	us-gaap	Operating Leases Income Statement Minimum Lease Revenue OperatingLeasesIncomeStatementMinimumLeaseRevenue	447321000	USD
CY2011	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8607000	USD
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	8681000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	10579000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	363158000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current And Noncurrent OtherAccruedLiabilitiesCurrentAndNoncurrent	318174000	USD
CY2013Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	65793000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	3237000	USD
CY2012Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	72811000	USD
CY2013	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	0	USD
CY2012	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	0	USD
CY2012	us-gaap	Other Income OtherIncome	39980000	USD
CY2013	us-gaap	Other Income OtherIncome	50242000	USD
CY2011	us-gaap	Other Income OtherIncome	30376000	USD
CY2011	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	86587000	USD
CY2012	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	85610000	USD
CY2013	us-gaap	Owned Property Management Costs OwnedPropertyManagementCosts	93461000	USD
CY2013	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	USD
CY2011	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	11366000	USD
CY2012	us-gaap	Payments For Repurchase Of Redeemable Noncontrolling Interest PaymentsForRepurchaseOfRedeemableNoncontrollingInterest	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	355506000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	326185000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	296948000	USD
CY2012	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	15108000	USD
CY2011	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	18976000	USD
CY2013	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	11966000	USD
CY2012	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	142210000	USD
CY2013	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	158682000	USD
CY2011	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	58932000	USD
CY2013	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	195675000	USD
CY2011	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	155351000	USD
CY2012	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	95358000	USD
CY2012	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	12500000	USD
CY2013	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	13330000	USD
CY2011	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	0	USD
CY2013	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	516239000	USD
CY2012	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1061851000	USD
CY2011	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	125105000	USD
CY2013	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	51683000	USD
CY2012	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	45654000	USD
CY2011	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	62974000	USD
CY2011	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	42000	USD
CY2012	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	86000	USD
CY2013	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1066000	USD
CY2013	us-gaap	Percentage Rent PercentageRent	23156000	USD
CY2011	us-gaap	Percentage Rent PercentageRent	16818000	USD
CY2012	us-gaap	Percentage Rent PercentageRent	21388000	USD
CY2012	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	USD
CY2013	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	8347000	USD
CY2011	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	USD
CY2013Q4	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	292500000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	171102000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	175649000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	3193451000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	757000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt And Capital Securities Net ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNet	2572764000	USD
CY2013	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	-1278000	USD
CY2012	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	-7371000	USD
CY2011	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1362000	USD
CY2012	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1378000	USD
CY2013	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	23769000	USD
CY2013	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	4140000	USD
CY2012	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	379000	USD
CY2011	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	4204000	USD
CY2013	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	589000	USD
CY2012	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	650000	USD
CY2011	us-gaap	Proceeds From Payments For Long Term Loans For Related Parties ProceedsFromPaymentsForLongTermLoansForRelatedParties	-900000	USD
CY2011	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1032000	USD
CY2012	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1263000	USD
CY2013	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1188000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	448959000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	169075000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	366389000	USD
CY2013Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1559572000	USD
CY2012Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1533160000	USD
CY2011Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1410692000	USD
CY2010Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	1234380000	USD
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4150000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3329000	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3212000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	7092966000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	1707005000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	2544325000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	5018885000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	1569224000	USD
CY2013Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	7343322000	USD
CY2013Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	9181338000	USD
CY2011Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	7489735000	USD
CY2010Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	6908507000	USD
CY2012Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	9012706000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1533160000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1559572000	USD
CY2013Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	9181338000	USD
CY2012Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	9012706000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	7621766000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	7479546000	USD
CY2012	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	15386000	USD
CY2013	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	15016000	USD
CY2011	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	16743000	USD
CY2011	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	627369000	USD
CY2013	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	3051072000	USD
CY2012	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	2371890000	USD
CY2012	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2013	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2011	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	180314000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	78658000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	16843000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-639741000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-548806000	USD
CY2013	us-gaap	Revenues Revenues	1029475000	USD
CY2011	us-gaap	Revenues Revenues	684744000	USD
CY2012Q2	us-gaap	Revenues Revenues	185055000	USD
CY2012Q4	us-gaap	Revenues Revenues	229207000	USD
CY2012	us-gaap	Revenues Revenues	797517000	USD
CY2013Q4	us-gaap	Revenues Revenues	282137000	USD
CY2013Q2	us-gaap	Revenues Revenues	245877000	USD
CY2012Q3	us-gaap	Revenues Revenues	195799000	USD
CY2012Q1	us-gaap	Revenues Revenues	187456000	USD
CY2013Q3	us-gaap	Revenues Revenues	258154000	USD
CY2013Q1	us-gaap	Revenues Revenues	243307000	USD
CY2012Q4	us-gaap	Secured Debt SecuredDebt	4437343000	USD
CY2013Q4	us-gaap	Secured Debt SecuredDebt	4415190000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	12324000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	24207000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	12288000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	108011	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost	1214000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost	3333000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Number Of Employees Affected ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationNumberOfEmployeesAffected	6	employee
CY2012	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	30000000	shares
CY2012	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	175649000	shares
CY2013	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1089000	USD
CY2011	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	766000	USD
CY2012	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	956000	USD
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	171102000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	175649000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	28122000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	18519000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	14970000	USD
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	99000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	266000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	307000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	3358749000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	3077529000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3718717000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3416251000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3187996000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3164651000	USD
CY2012	us-gaap	Straight Line Rent StraightLineRent	5399000	USD
CY2013	us-gaap	Straight Line Rent StraightLineRent	7498000	USD
CY2011	us-gaap	Straight Line Rent StraightLineRent	4557000	USD
CY2011	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-5398000	USD
CY2013	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-7987000	USD
CY2012	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-6698000	USD
CY2011Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	0	USD
CY2013Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	11366000	USD
CY2012Q4	us-gaap	Tenant Improvements TenantImprovements	496203000	USD
CY2013Q4	us-gaap	Tenant Improvements TenantImprovements	537754000	USD
CY2013	us-gaap	Tenant Reimbursements TenantReimbursements	337772000	USD
CY2011	us-gaap	Tenant Reimbursements TenantReimbursements	215872000	USD
CY2012	us-gaap	Tenant Reimbursements TenantReimbursements	247593000	USD
CY2013	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	397000	USD
CY2011	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Per Share CommonStockDividendsUnrecapturedSection1250GainDistributionPerShare	0.04
CY2012	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Percentage CommonStockDividendsUnrecapturedSection1250GainDistributionPercentage	0.161
CY2013	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Percentage CommonStockDividendsUnrecapturedSection1250GainDistributionPercentage	0.042
CY2011	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Percentage CommonStockDividendsUnrecapturedSection1250GainDistributionPercentage	0.020
CY2012	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	577000	USD
CY2011	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	1436000	USD
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	131628000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	134148000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	139680000	shares
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Management Estimates:</font></div><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	139598000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	131628000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	134067000	shares
CY2013Q4	mac	Accumulated Amortization Deferred Costs And Finite Lived Intangible Assets AccumulatedAmortizationDeferredCostsAndFiniteLivedIntangibleAssets	244771000	USD
CY2012Q4	mac	Accumulated Amortization Deferred Costs And Finite Lived Intangible Assets AccumulatedAmortizationDeferredCostsAndFiniteLivedIntangibleAssets	213318000	USD
CY2011	mac	Application Of Deposits On Payments To Acquire Real Estate ApplicationOfDepositsOnPaymentsToAcquireRealEstate	0	USD
CY2012	mac	Application Of Deposits On Payments To Acquire Real Estate ApplicationOfDepositsOnPaymentsToAcquireRealEstate	0	USD
CY2013	mac	Application Of Deposits On Payments To Acquire Real Estate ApplicationOfDepositsOnPaymentsToAcquireRealEstate	30000000	USD
CY2011	mac	Book Income Loss For Trs BookIncomeLossForTRS	19558000	USD
CY2012	mac	Book Income Loss For Trs BookIncomeLossForTRS	16154000	USD
CY2013	mac	Book Income Loss For Trs BookIncomeLossForTRS	11709000	USD
CY2013	mac	Common Stock Dividends Capital Gain Distribution Per Share CommonStockDividendsCapitalGainDistributionPerShare	1.24
CY2011	mac	Common Stock Dividends Capital Gain Distribution Per Share CommonStockDividendsCapitalGainDistributionPerShare	0.01
CY2012	mac	Common Stock Dividends Capital Gain Distribution Per Share CommonStockDividendsCapitalGainDistributionPerShare	1.13
CY2013	mac	Common Stock Dividends Capital Gain Distribution Percentage CommonStockDividendsCapitalGainDistributionPercentage	0.525
CY2011	mac	Common Stock Dividends Capital Gain Distribution Percentage CommonStockDividendsCapitalGainDistributionPercentage	0.005
CY2012	mac	Common Stock Dividends Capital Gain Distribution Percentage CommonStockDividendsCapitalGainDistributionPercentage	0.507
CY2012	mac	Common Stock Dividends Cash Paid Percentage CommonStockDividendsCashPaidPercentage	1.000
CY2011	mac	Common Stock Dividends Cash Paid Percentage CommonStockDividendsCashPaidPercentage	1.000
CY2013	mac	Common Stock Dividends Cash Paid Percentage CommonStockDividendsCashPaidPercentage	1.000
CY2012	mac	Common Stock Dividends Ordinary Income Per Share CommonStockDividendsOrdinaryIncomePerShare	0.74
CY2011	mac	Common Stock Dividends Ordinary Income Per Share CommonStockDividendsOrdinaryIncomePerShare	0.85
CY2013	mac	Common Stock Dividends Ordinary Income Per Share CommonStockDividendsOrdinaryIncomePerShare	1.02
CY2012	mac	Common Stock Dividends Ordinary Income Percentage CommonStockDividendsOrdinaryIncomePercentage	0.332
CY2011	mac	Common Stock Dividends Ordinary Income Percentage CommonStockDividendsOrdinaryIncomePercentage	0.415
CY2013	mac	Common Stock Dividends Ordinary Income Percentage CommonStockDividendsOrdinaryIncomePercentage	0.433
CY2011	mac	Common Stock Dividends Return Of Capital Distribution Per Share CommonStockDividendsReturnOfCapitalDistributionPerShare	1.15
CY2013	mac	Common Stock Dividends Return Of Capital Distribution Per Share CommonStockDividendsReturnOfCapitalDistributionPerShare	0.00
CY2012	mac	Common Stock Dividends Return Of Capital Distribution Per Share CommonStockDividendsReturnOfCapitalDistributionPerShare	0.00
CY2013	mac	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.000
CY2011	mac	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.560
CY2012	mac	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.000
CY2012	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Per Share CommonStockDividendsUnrecapturedSection1250GainDistributionPerShare	0.36
CY2013	mac	Common Stock Dividends Unrecaptured Section1250 Gain Distribution Per Share CommonStockDividendsUnrecapturedSection1250GainDistributionPerShare	0.10
CY2012Q4	mac	Convertible Debt Line Of Credit And Other Notes Payable ConvertibleDebtLineOfCreditAndOtherNotesPayable	824027000	USD
CY2013Q4	mac	Convertible Debt Line Of Credit And Other Notes Payable ConvertibleDebtLineOfCreditAndOtherNotesPayable	167537000	USD
CY2011	mac	Costs And Expenses Before Interest Total CostsAndExpensesBeforeInterestTotal	549512000	USD
CY2012	mac	Costs And Expenses Before Interest Total CostsAndExpensesBeforeInterestTotal	635566000	USD
CY2013	mac	Costs And Expenses Before Interest Total CostsAndExpensesBeforeInterestTotal	808193000	USD
CY2013Q4	mac	Deferred Costs And Other Assets Gross DeferredCostsAndOtherAssetsGross	777829000	USD
CY2012Q4	mac	Deferred Costs And Other Assets Gross DeferredCostsAndOtherAssetsGross	778448000	USD
CY2012Q4	mac	Deferred Costs And Other Assets Net DeferredCostsAndOtherAssetsNet	565130000	USD
CY2013Q4	mac	Deferred Costs And Other Assets Net DeferredCostsAndOtherAssetsNet	533058000	USD
CY2012Q4	mac	Deferred Tax Assets Liabilities Other DeferredTaxAssetsLiabilitiesOther	1606000	USD
CY2013Q4	mac	Deferred Tax Assets Liabilities Other DeferredTaxAssetsLiabilitiesOther	1289000	USD
CY2011	mac	Deposits On Payments To Acquire Real Estate DepositsOnPaymentsToAcquireRealEstate	0	USD
CY2012	mac	Deposits On Payments To Acquire Real Estate DepositsOnPaymentsToAcquireRealEstate	30000000	USD
CY2013	mac	Deposits On Payments To Acquire Real Estate DepositsOnPaymentsToAcquireRealEstate	0	USD
CY2013	mac	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Including Penaltyfor Early Extinguishmentof Debt DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxIncludingPenaltyforEarlyExtinguishmentofDebt	286414000	USD
CY2012	mac	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Including Penaltyfor Early Extinguishmentof Debt DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxIncludingPenaltyforEarlyExtinguishmentofDebt	50811000	USD
CY2011	mac	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Including Penaltyfor Early Extinguishmentof Debt DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxIncludingPenaltyforEarlyExtinguishmentofDebt	-67333000	USD
CY2012Q4	mac	Discount On Held To Maturity Securities DiscountOnHeldToMaturitySecurities	102000	USD
CY2013Q4	mac	Discount On Held To Maturity Securities DiscountOnHeldToMaturitySecurities	0	USD
CY2013	mac	Distributions Of Capital From Unconsolidated Entities And Other DistributionsOfCapitalFromUnconsolidatedEntitiesAndOther	715825000	USD
CY2011	mac	Distributions Of Capital From Unconsolidated Entities And Other DistributionsOfCapitalFromUnconsolidatedEntitiesAndOther	215651000	USD
CY2012	mac	Distributions Of Capital From Unconsolidated Entities And Other DistributionsOfCapitalFromUnconsolidatedEntitiesAndOther	322242000	USD
CY2013	mac	Distributions To Co Venture Partner DistributionsToCoVenturePartner	19564000	USD
CY2011	mac	Distributions To Co Venture Partner DistributionsToCoVenturePartner	40905000	USD
CY2012	mac	Distributions To Co Venture Partner DistributionsToCoVenturePartner	39479000	USD
CY2013	mac	Equity Method Investment Amortization Of Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity	10734000	USD
CY2011	mac	Equity Method Investment Amortization Of Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity	9257000	USD
CY2012	mac	Equity Method Investment Amortization Of Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentAmortizationOfDifferenceBetweenCarryingAmountAndUnderlyingEquity	15480000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Cost Of Real Estate Revenue EquityMethodInvestmentSummarizedFinancialInformationCostOfRealEstateRevenue	287234000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Cost Of Real Estate Revenue EquityMethodInvestmentSummarizedFinancialInformationCostOfRealEstateRevenue	229818000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Cost Of Real Estate Revenue EquityMethodInvestmentSummarizedFinancialInformationCostOfRealEstateRevenue	364260000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	177997000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	147309000	USD
CY2012Q4	mac	Finite Lived Intangible Asset Above Market Leases FiniteLivedIntangibleAssetAboveMarketLeases	118033000	USD
CY2013Q4	mac	Finite Lived Intangible Asset Above Market Leases FiniteLivedIntangibleAssetAboveMarketLeases	118770000	USD
CY2013Q4	mac	Finite Lived Intangible Asset Leasing Commissions And Legal Costs FiniteLivedIntangibleAssetLeasingCommissionsAndLegalCosts	50594000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Depreciation And Amortization EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization	215667000	USD
CY2012Q4	mac	Equity Method Investment Summarized Financial Information Equity Or Capital Other Interests EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapitalOtherInterests	371582000	USD
CY2013Q4	mac	Equity Method Investment Summarized Financial Information Equity Or Capital Other Interests EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapitalOtherInterests	36164000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Gain Loss On Sale And Remeasurement Of Assets EquityMethodInvestmentSummarizedFinancialInformationGainLossOnSaleAndRemeasurementOfAssets	190526000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Gain Loss On Sale And Remeasurement Of Assets EquityMethodInvestmentSummarizedFinancialInformationGainLossOnSaleAndRemeasurementOfAssets	29301000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Gain Loss On Sale And Remeasurement Of Assets EquityMethodInvestmentSummarizedFinancialInformationGainLossOnSaleAndRemeasurementOfAssets	389707000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Gainlosson Early Extinguishmentof Debt EquityMethodInvestmentSummarizedFinancialInformationGainlossonEarlyExtinguishmentofDebt	14000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Gainlosson Early Extinguishmentof Debt EquityMethodInvestmentSummarizedFinancialInformationGainlossonEarlyExtinguishmentofDebt	15704000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	145322000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	199916000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Interest Expense EquityMethodInvestmentSummarizedFinancialInformationInterestExpense	260093000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Minimum Lease Revenue EquityMethodInvestmentSummarizedFinancialInformationMinimumLeaseRevenue	418724000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Minimum Lease Revenue EquityMethodInvestmentSummarizedFinancialInformationMinimumLeaseRevenue	512002000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Minimum Lease Revenue EquityMethodInvestmentSummarizedFinancialInformationMinimumLeaseRevenue	633646000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Operating Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses	522449000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Operating Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses	665147000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Operating Expenses EquityMethodInvestmentSummarizedFinancialInformationOperatingExpenses	840020000	USD
CY2012Q4	mac	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	411862000	USD
CY2013Q4	mac	Equity Method Investment Summarized Financial Information Other Assets EquityMethodInvestmentSummarizedFinancialInformationOtherAssets	295719000	USD
CY2013Q4	mac	Equity Method Investment Summarized Financial Information Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities	202444000	USD
CY2012Q4	mac	Equity Method Investment Summarized Financial Information Other Liabilities EquityMethodInvestmentSummarizedFinancialInformationOtherLiabilities	148711000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Other Revenue EquityMethodInvestmentSummarizedFinancialInformationOtherRevenue	46239000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Other Revenue EquityMethodInvestmentSummarizedFinancialInformationOtherRevenue	45627000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Other Revenue EquityMethodInvestmentSummarizedFinancialInformationOtherRevenue	49720000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Percentage Rent EquityMethodInvestmentSummarizedFinancialInformationPercentageRent	19589000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Percentage Rent EquityMethodInvestmentSummarizedFinancialInformationPercentageRent	23087000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Percentage Rent EquityMethodInvestmentSummarizedFinancialInformationPercentageRent	31425000	USD
CY2012Q4	mac	Equity Method Investment Summarized Financial Information Real Estate Investment Property Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateInvestmentPropertyNet	3653631000	USD
CY2013Q4	mac	Equity Method Investment Summarized Financial Information Real Estate Investment Property Net EquityMethodInvestmentSummarizedFinancialInformationRealEstateInvestmentPropertyNet	3435737000	USD
CY2012Q4	mac	Equity Method Investment Summarized Financial Information Secured Debt EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt	3240723000	USD
CY2013Q4	mac	Equity Method Investment Summarized Financial Information Secured Debt EquityMethodInvestmentSummarizedFinancialInformationSecuredDebt	3518215000	USD
CY2013	mac	Equity Method Investment Summarized Financial Information Tenant Reimbursements EquityMethodInvestmentSummarizedFinancialInformationTenantReimbursements	204171000	USD
CY2012	mac	Equity Method Investment Summarized Financial Information Tenant Reimbursements EquityMethodInvestmentSummarizedFinancialInformationTenantReimbursements	250168000	USD
CY2011	mac	Equity Method Investment Summarized Financial Information Tenant Reimbursements EquityMethodInvestmentSummarizedFinancialInformationTenantReimbursements	309735000	USD
CY2013Q4	mac	Equity Method Investments Net EquityMethodInvestmentsNet	449291000	USD
CY2012Q4	mac	Equity Method Investments Net EquityMethodInvestmentsNet	821310000	USD
CY2012Q4	mac	Guarantee Obligations Exposure Indemnified By Third Party GuaranteeObligationsExposureIndemnifiedByThirdParty	21270000	USD
CY2013Q4	mac	Guarantee Obligations Exposure Indemnified By Third Party GuaranteeObligationsExposureIndemnifiedByThirdParty	16770000	USD
CY2012Q4	mac	Held To Maturity Securities Par Value HeldToMaturitySecuritiesParValue	23769000	USD
CY2012Q4	mac	Finite Lived Intangible Asset Leasing Commissions And Legal Costs FiniteLivedIntangibleAssetLeasingCommissionsAndLegalCosts	46419000	USD
CY2013	mac	Gain Loss On Sale Or Remeasurement Of Assets And Interests In Unconsolidated Entities GainLossOnSaleOrRemeasurementOfAssetsAndInterestsInUnconsolidatedEntities	-26852000	USD
CY2012	mac	Gain Loss On Sale Or Remeasurement Of Assets And Interests In Unconsolidated Entities GainLossOnSaleOrRemeasurementOfAssetsAndInterestsInUnconsolidatedEntities	228690000	USD
CY2011	mac	Gain Loss On Sale Or Remeasurement Of Assets And Interests In Unconsolidated Entities GainLossOnSaleOrRemeasurementOfAssetsAndInterestsInUnconsolidatedEntities	-22037000	USD
CY2013Q4	mac	Real Estate And Accumulated Depreciation Initial Cost Of Equipment Furnishing RealEstateAndAccumulatedDepreciationInitialCostOfEquipmentFurnishing	48904000	USD
CY2013Q4	mac	Held To Maturity Securities Par Value HeldToMaturitySecuritiesParValue	0	USD
CY2013Q4	mac	Held To Maturity Securities Unrecognized Holding Gains1 HeldToMaturitySecuritiesUnrecognizedHoldingGains1	0	USD
CY2012Q4	mac	Held To Maturity Securities Unrecognized Holding Gains1 HeldToMaturitySecuritiesUnrecognizedHoldingGains1	685000	USD
CY2013	mac	Income Loss From Coventure Operations IncomeLossFromCoventureOperations	-8864000	USD
CY2011	mac	Income Loss From Coventure Operations IncomeLossFromCoventureOperations	-5806000	USD
CY2012	mac	Income Loss From Coventure Operations IncomeLossFromCoventureOperations	-6523000	USD
CY2012Q4	mac	Investments In Unconsolidated Joint Ventures InvestmentsInUnconsolidatedJointVentures	152948000	USD
CY2013Q4	mac	Investments In Unconsolidated Joint Ventures InvestmentsInUnconsolidatedJointVentures	252192000	USD
CY2013	mac	Management Fees And Other Revenues ManagementFeesAndOtherRevenues	40192000	USD
CY2011	mac	Management Fees And Other Revenues ManagementFeesAndOtherRevenues	40404000	USD
CY2012	mac	Management Fees And Other Revenues ManagementFeesAndOtherRevenues	41235000	USD
CY2013Q4	mac	Minority Interest Redemption Value MinorityInterestRedemptionValue	587917000	USD
CY2012Q4	mac	Minority Interest Redemption Value MinorityInterestRedemptionValue	586409000	USD
CY2013	mac	Minority Interest Redemption Value Basis Number Of Trading Days MinorityInterestRedemptionValueBasisNumberOfTradingDays	P10D
CY2012Q4	mac	Mortgage Notes Payable Probable Recourse Amount MortgageNotesPayableProbableRecourseAmount	213466000	USD
CY2013Q4	mac	Mortgage Notes Payable Probable Recourse Amount MortgageNotesPayableProbableRecourseAmount	77192000	USD
CY2011	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Basic NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic	155430000	USD
CY2013	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Basic NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic	419693000	USD
CY2012	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Basic NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesBasic	336849000	USD
CY2012	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Diluted NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesDiluted	134067000	USD
CY2011	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Diluted NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesDiluted	131628000	USD
CY2013	mac	Net Income Loss Available To Common Stockholders After Allocation To Participating Securities Diluted NetIncomeLossAvailableToCommonStockholdersAfterAllocationToParticipatingSecuritiesDiluted	139598000	USD
CY2013	mac	Noncontrolling Interest Increasefrom Contributionsfrom Noncontrolling Interests NoncontrollingInterestIncreasefromContributionsfromNoncontrollingInterests	18079000	USD
CY2011	mac	Noncontrolling Interest Increasefrom Contributionsfrom Noncontrolling Interests NoncontrollingInterestIncreasefromContributionsfromNoncontrollingInterests	78921000	USD
CY2012	mac	Noncontrolling Interest Increasefrom Contributionsfrom Noncontrolling Interests NoncontrollingInterestIncreasefromContributionsfromNoncontrollingInterests	605000	USD
CY2011	mac	Notes Reduction Saleof Properties NotesReductionSaleofProperties	0	USD
CY2012	mac	Notes Reduction Saleof Properties NotesReductionSaleofProperties	0	USD
CY2013	mac	Notes Reduction Saleof Properties NotesReductionSaleofProperties	224737000	USD
CY2013	mac	Number Of Forms Of In Place Operating Leases NumberOfFormsOfInPlaceOperatingLeases	3	form
CY2013	mac	Number Of Real Estate Management Companies NumberOfRealEstateManagementCompanies	7	entity
CY2013	mac	Proceeds From Sale Of Partnership Interests Other Assets And Discontinued Operations Net ProceedsFromSaleOfPartnershipInterestsOtherAssetsAndDiscontinuedOperationsNet	416077000	USD
CY2011	mac	Proceeds From Sale Of Partnership Interests Other Assets And Discontinued Operations Net ProceedsFromSaleOfPartnershipInterestsOtherAssetsAndDiscontinuedOperationsNet	16960000	USD
CY2012	mac	Proceeds From Sale Of Partnership Interests Other Assets And Discontinued Operations Net ProceedsFromSaleOfPartnershipInterestsOtherAssetsAndDiscontinuedOperationsNet	136707000	USD
CY2013	mac	Real Estate Accumulated Depreciation Depreciation Expense And Other Additions RealEstateAccumulatedDepreciationDepreciationExpenseAndOtherAdditions	284500000	USD
CY2012	mac	Real Estate Accumulated Depreciation Depreciation Expense And Other Additions RealEstateAccumulatedDepreciationDepreciationExpenseAndOtherAdditions	241231000	USD
CY2011	mac	Real Estate Accumulated Depreciation Depreciation Expense And Other Additions RealEstateAccumulatedDepreciationDepreciationExpenseAndOtherAdditions	223630000	USD
CY2011	mac	Real Estate Accumulated Depreciation Real Estate Sold Or Retired RealEstateAccumulatedDepreciationRealEstateSoldOrRetired	47318000	USD
CY2012	mac	Real Estate Accumulated Depreciation Real Estate Sold Or Retired RealEstateAccumulatedDepreciationRealEstateSoldOrRetired	118763000	USD
CY2013	mac	Real Estate Accumulated Depreciation Real Estate Sold Or Retired RealEstateAccumulatedDepreciationRealEstateSoldOrRetired	258088000	USD
CY2011	mac	Real Estate Acquisitions Improvements And Other Additions RealEstateAcquisitionsImprovementsAndOtherAdditions	784717000	USD
CY2013Q4	mac	Real Estate Acquisitions Improvements And Other Additions RealEstateAcquisitionsImprovementsAndOtherAdditions	943159000	USD
CY2012	mac	Real Estate Acquisitions Improvements And Other Additions RealEstateAcquisitionsImprovementsAndOtherAdditions	1909530000	USD
CY2011	mac	Real Estate Cost Of Real Estate Sold Or Retired RealEstateCostOfRealEstateSoldOrRetired	203489000	USD
CY2013Q4	mac	Real Estate Cost Of Real Estate Sold Or Retired RealEstateCostOfRealEstateSoldOrRetired	774527000	USD
CY2012	mac	Real Estate Cost Of Real Estate Sold Or Retired RealEstateCostOfRealEstateSoldOrRetired	386559000	USD
CY2013Q4	mac	Secured Debt Nonrelated Party SecuredDebtNonrelatedParty	4145809000	USD
CY2012Q4	mac	Secured Debt Nonrelated Party SecuredDebtNonrelatedParty	4162734000	USD
CY2012	mac	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited During Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedDuringPeriodWeightedAverageGrantDateFairValue	0.00
CY2013	mac	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited During Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedDuringPeriodWeightedAverageGrantDateFairValue	0.00
CY2011	mac	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeited During Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeitedDuringPeriodWeightedAverageGrantDateFairValue	76.05
CY2011	mac	Stock Issued During Period Value Stock Warrants Exercised StockIssuedDuringPeriodValueStockWarrantsExercised	-1278000	USD
CY2012	mac	Stock Issued During Period Value Stock Warrants Exercised StockIssuedDuringPeriodValueStockWarrantsExercised	-7371000	USD
CY2013Q4	mac	Threshold Ownership Percentage For Equity Method Accounting Only If No Controlling Financial Interest ThresholdOwnershipPercentageForEquityMethodAccountingOnlyIfNoControllingFinancialInterest	0.5
CY2013	mac	Write Off Of Development Cost WriteOffOfDevelopmentCost	-1250000	USD
CY2012	mac	Write Off Of Development Cost WriteOffOfDevelopmentCost	19360000	USD
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	10-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0000912242
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	140553257	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	8500000000	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	MACERICH CO
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

Files In Submission

Name	View Source	Status
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0000912242-14-000003-index.html	Edgar Link	pending
0000912242-14-000003.txt	Edgar Link	pending
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$MAC
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2012 Q4 Form 10-K Financial Statement

#000091224214000003 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MAC Macerich Co Stock $mac

2012 Q4 Form 10-K Financial Statement

#000091224214000003 Filed on February 21, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MAC
Macerich Co Stock $mac