CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Minimum rents	$ 633,571	$ 578,113	$ 447,321
Percentage rents	24,350us-gaap_PercentageRent	23,156us-gaap_PercentageRent	21,388us-gaap_PercentageRent
Tenant recoveries	361,119us-gaap_TenantReimbursements	337,772us-gaap_TenantReimbursements	247,593us-gaap_TenantReimbursements
Management Companies	33,981mac_ManagementFeesAndOtherRevenues	40,192mac_ManagementFeesAndOtherRevenues	41,235mac_ManagementFeesAndOtherRevenues
Other	52,226us-gaap_OtherIncome	50,242us-gaap_OtherIncome	39,980us-gaap_OtherIncome
Total revenues	1,105,247us-gaap_Revenues	1,029,475us-gaap_Revenues	797,517us-gaap_Revenues
Expenses:
Shopping center and operating expenses	353,505us-gaap_CostOfRealEstateRevenue	329,795us-gaap_CostOfRealEstateRevenue	251,923us-gaap_CostOfRealEstateRevenue
Management Companies' operating expenses	88,424us-gaap_OwnedPropertyManagementCosts	93,461us-gaap_OwnedPropertyManagementCosts	85,610us-gaap_OwnedPropertyManagementCosts
REIT general and administrative expenses	29,412us-gaap_GeneralAndAdministrativeExpense	27,772us-gaap_GeneralAndAdministrativeExpense	20,412us-gaap_GeneralAndAdministrativeExpense
Depreciation and amortization	378,716us-gaap_DepreciationAndAmortization	357,165us-gaap_DepreciationAndAmortization	277,621us-gaap_DepreciationAndAmortization
Total expenses before interest	850,057mac_CostsAndExpensesBeforeInterestTotal	808,193mac_CostsAndExpensesBeforeInterestTotal	635,566mac_CostsAndExpensesBeforeInterestTotal
Interest expense:
Related parties	15,134	15,016	15,386
Other	175,555us-gaap_InterestExpenseOther	182,231us-gaap_InterestExpenseOther	149,006us-gaap_InterestExpenseOther
Total interest expense	190,689us-gaap_InterestExpense	197,247us-gaap_InterestExpense	164,392us-gaap_InterestExpense
Loss (gain) on early extinguishment of debt, net	9,551	(1,432)	0
Total expenses	1,050,297us-gaap_CostsAndExpenses	1,004,008us-gaap_CostsAndExpenses	799,958us-gaap_CostsAndExpenses
Equity in income of unconsolidated joint ventures	60,626	167,580	79,281
Co-venture expense	(9,490)mac_IncomeLossFromCoventureOperations	(8,864)mac_IncomeLossFromCoventureOperations	(6,523)mac_IncomeLossFromCoventureOperations
Income tax benefit	4,269us-gaap_IncomeTaxExpenseBenefit	1,692us-gaap_IncomeTaxExpenseBenefit	4,159us-gaap_IncomeTaxExpenseBenefit
Gain (loss) on sale or write down of assets, net	73,440mac_GainLossonSaleorWriteDownofAssets	(78,057)mac_GainLossonSaleorWriteDownofAssets	28,734mac_GainLossonSaleorWriteDownofAssets
Gain on remeasurement of assets	1,423,136	51,205	199,956
Income from continuing operations	1,606,931	159,023	303,166
Discontinued operations:
Gain on disposition of assets, net	0	286,414	50,811
Income from discontinued operations	0	3,522	12,412
Total income from discontinued operations	0	289,936	63,223
Net income	1,606,931us-gaap_ProfitLoss	448,959us-gaap_ProfitLoss	366,389us-gaap_ProfitLoss
Less net income attributable to noncontrolling interests	107,889	28,869	28,963
Net income attributable to the Company	$ 1,499,042	$ 420,090	$ 337,426
Earnings per common share attributable to Company—basic: (in dollars per share)
Income from continuing operations	$ 10.46	$ 1.07	$ 2.07
Discontinued operations	$ 0.00	$ 1.94	$ 0.44
Net income attributable to common stockholders	$ 10.46us-gaap_EarningsPerShareBasic	$ 3.01us-gaap_EarningsPerShareBasic	$ 2.51us-gaap_EarningsPerShareBasic
Earnings per common share attributable to Company—diluted: (in dollars per share)
Income from continuing operations	$ 10.45	$ 1.06	$ 2.07
Discontinued operations	$ 0.00	$ 1.94	$ 0.44
Net income attributable to common stockholders	$ 10.45us-gaap_EarningsPerShareDiluted	$ 3.00us-gaap_EarningsPerShareDiluted	$ 2.51us-gaap_EarningsPerShareDiluted
Weighted average number of common shares outstanding: (in shares)
Basic	143,144	139,598	134,067
Diluted	143,291	139,680	134,148

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Amount of the cost of borrowed funds accounted for as interest expense.

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Interest expense on all other items not previously classified. For example, includes dividends associated with redeemable preferred stock of a subsidiary that is treated as a liability in the parent's consolidated balance sheet.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The total amount of lease revenue recognized for the period for which the lessee was obligated under leasing arrangements regardless of any other events or conditions. This amount excludes contingent revenue and sublease revenue.

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Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement.

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The aggregate costs related to management of owned properties during the reporting period.

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This element represents the rental revenue earned during the period from lessee-operators based on revenues generated in their operations, generally in excess of a base amount. Such rental revenue is generally stipulated in the lease agreement, usually will provide for a fixed percentage of revenue to be paid as additional (or possibly only) rent due the lessor, and may be based on gross revenues, net revenues, or multiple variations thereof. Percentage rent is often required under leases with retail outlets located on premises owned by hoteliers, cruise lines, others in the hospitality industry, and shopping mall operators, among others.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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