The percentage of ownership interest in the joint venture sold by the entity during the period.

No definition available.

Name:	mac_JointVentureOwnershipPercentageSold
Namespace Prefix:	mac_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of mortgage notes payable which could become recourse to the entity.

+ References

No definition available.

+ Details

Name:	mac_MortgageNotesPayableProbableRecourseAmount
Namespace Prefix:	mac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Portion of the loan assumed by a third party.

+ References

No definition available.

+ Details

Name:	mac_PercentageOfLoanAssumedByThirdParty
Namespace Prefix:	mac_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations such as mortgage loans.

+ References

No definition available.

+ Details

Name:	mac_SecuredDebtNonrelatedParty
Namespace Prefix:	mac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Mortgage Notes Payable: (Details) (USD $)	12 Months Ended			0 Months Ended
Mortgage Notes Payable: (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 14, 2014	Sep. 30, 2009	Dec. 22, 2014	Jan. 03, 2013	Nov. 10, 2014	Feb. 07, 2014 loan	Aug. 28, 2014
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	$ 289,039,000	$ 269,381,000
Others	5,115,482,000mac_SecuredDebtNonrelatedParty	4,145,809,000mac_SecuredDebtNonrelatedParty
Debt premiums (discounts), net	56,921,000	23,766,000
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities	1,414,659,000	257,064,000	420,123,000
Loss (gain) on early extinguishment of debt, net	526,000	(1,432,000)	0
Probable recourse amount	73,165,000	77,192,000
Interest expense capitalized	12,559,000us-gaap_InterestCostsCapitalized	10,829,000us-gaap_InterestCostsCapitalized	10,703,000us-gaap_InterestCostsCapitalized
Fair value of mortgage notes payable	5,455,453,000us-gaap_NotesPayableFairValueDisclosure	4,500,177,000us-gaap_NotesPayableFairValueDisclosure
PPRLP Queens Portfolio
Mortgage loans payable on real estate
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				672,109,000
Freehold Raceway Mall and Chandler Fashion Center
Mortgage loans payable on real estate
Interest in the loan assumed by a third party (as a percent)					49.90%
Ownership interest (as a percent)					49.90%
Arrowhead Towne Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	228,703,000	236,028,000
Effective Interest Rate (as a percent)	2.76%
Monthly Debt Service	1,131,000
Debt premiums	11,568,000	14,642,000
Camelback Colonnade
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	0	49,120,000
Effective Interest Rate (as a percent)	0.00%
Monthly Debt Service	0
Debt premiums	0	2,120,000
Chandler Fashion Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	200,000,000	200,000,000
Effective Interest Rate (as a percent)	3.77%
Monthly Debt Service	625,000
Danbury Fair Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	114,265,000	117,120,000
Others	114,264,000	117,120,000
Effective Interest Rate (as a percent)	5.53%
Monthly Debt Service	1,538,000
Deptford Mall One
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	197,815,000	201,622,000
Effective Interest Rate (as a percent)	3.76%
Monthly Debt Service	947,000
Debt discounts	(8,000)	(14,000)
Deptford Mall Two
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	14,285,000	14,551,000
Effective Interest Rate (as a percent)	6.46%
Monthly Debt Service	101,000
Eastland Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	168,000,000	168,000,000
Effective Interest Rate (as a percent)	5.79%
Monthly Debt Service	811,000
Fashion Outlets of Chicago
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	119,329,000	91,383,000
Effective Interest Rate (as a percent)	2.97%	2.96%
Monthly Debt Service	259,000
Debt issued	140,000,000
Reference rate for variable interest rate	LIBOR
Interest rate spread over basis (as a percent)	2.50%
Fashion Outlets of Niagara Falls USA
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	121,376,000	124,030,000
Effective Interest Rate (as a percent)	4.89%
Monthly Debt Service	727,000
Debt premiums	5,414,000	6,342,000
Flagstaff Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	37,000,000	37,000,000
Effective Interest Rate (as a percent)	5.03%
Monthly Debt Service	151,000
FlatIron Crossing
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	261,494,000	268,000,000
Effective Interest Rate (as a percent)	3.90%
Monthly Debt Service	1,393,000
Freehold Raceway Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	229,244,000	232,900,000
Effective Interest Rate (as a percent)	4.20%
Monthly Debt Service	1,132,000
Fresno Fashion Fair
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	79,391,000
Others	0	79,390,000
Effective Interest Rate (as a percent)	0.00%
Monthly Debt Service	0
Loss (gain) on early extinguishment of debt, net						5,796,000
Great Northern Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	34,494,000	35,484,000
Effective Interest Rate (as a percent)	6.54%
Monthly Debt Service	234,000
Green Acres Mall Mortgage
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	313,514,000	319,850,000
Effective Interest Rate (as a percent)	3.61%
Monthly Debt Service	1,447,000
Kings Plaza Shopping Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	480,761,000	490,548,000
Effective Interest Rate (as a percent)	3.67%
Monthly Debt Service	2,229,000
Debt issued							146,000,000
Lakewood Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	253,708,000	0
Monthly Debt Service	1,127,000
Debt premiums	3,708,000	0
Lakewood Center \| PPRLP Queens Portfolio
Mortgage loans payable on real estate
Effective Interest Rate (as a percent)	1.80%
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				254,880,000
Los Cerritos Center Mortgage
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	103,274,000	0
Others	103,274,000	0
Monthly Debt Service	1,009,000
Debt premiums	17,965,000	0
Los Cerritos Center Mortgage \| PPRLP Queens Portfolio
Mortgage loans payable on real estate
Effective Interest Rate (as a percent)	1.65%
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				207,528,000
Northgate Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	64,000,000	64,000,000
Effective Interest Rate (as a percent)	3.05%	3.04%
Monthly Debt Service	128,000
Reference rate for variable interest rate	LIBOR
Interest rate spread over basis (as a percent)	2.25%
Oaks, The
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	210,197,000	214,239,000
Effective Interest Rate (as a percent)	4.14%
Monthly Debt Service	1,064,000
Pacific View
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	133,200,000	135,835,000
Effective Interest Rate (as a percent)	4.08%
Monthly Debt Service	668,000
Queens Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	600,000,000	0
Monthly Debt Service	1,744,000
Queens Center \| PPRLP Queens Portfolio
Mortgage loans payable on real estate
Effective Interest Rate (as a percent)	3.49%
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				600,000,000
Santa Monica Place
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	230,344,000	235,445,000
Effective Interest Rate (as a percent)	2.99%
Monthly Debt Service	1,004,000
SanTan Village Regional Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	133,807,000	136,629,000
Effective Interest Rate (as a percent)	3.14%
Monthly Debt Service	589,000
South Plains Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	0	99,833,000
Effective Interest Rate (as a percent)	0.00%
Number of loans									2
Monthly Debt Service	0
Loss (gain) on early extinguishment of debt, net								163,000	359,000
Stonewood Center Mortgage
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	111,297,000	0
Monthly Debt Service	640,000
Debt premiums	7,980,000	0
Stonewood Center Mortgage \| PPRLP Queens Portfolio
Mortgage loans payable on real estate
Effective Interest Rate (as a percent)				1.80%
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				111,910,000
Superstition Springs Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	68,079,000	68,395,000
Effective Interest Rate (as a percent)	1.98%	2.00%
Monthly Debt Service	138,000
Debt premiums	579,000	895,000
Reference rate for variable interest rate	LIBOR
Interest rate spread over basis (as a percent)	2.30%
Towne Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	22,607,000	22,996,000
Effective Interest Rate (as a percent)	4.48%
Monthly Debt Service	117,000
Tucson La Encantada
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	71,500,000	72,870,000
Others	0	0
Effective Interest Rate (as a percent)	4.23%
Monthly Debt Service	368,000
Valley Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	41,368,000	42,155,000
Effective Interest Rate (as a percent)	5.85%
Monthly Debt Service	280,000
Debt discounts	(132,000)	(219,000)
Valley River Center
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	120,000,000	120,000,000
Effective Interest Rate (as a percent)	5.59%
Monthly Debt Service	558,000
Victor Valley, Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	115,000,000	90,000,000
Effective Interest Rate (as a percent)	4.00%
Monthly Debt Service	380,000
Loss (gain) on early extinguishment of debt, net										(47,000)
Vintage Faire Mall
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	0	99,083,000
Effective Interest Rate (as a percent)	0.00%
Monthly Debt Service	0
Loss (gain) on early extinguishment of debt, net						3,186,000
Washington Square
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	238,696,000	0
Monthly Debt Service	1,499,000
Debt premiums	9,847,000	0
Washington Square \| PPRLP Queens Portfolio
Mortgage loans payable on real estate
Effective Interest Rate (as a percent)	1.65%
Acquisition of properties by assumption of mortgage note payable and other accrued liabilities				240,341,000
Westside Pavilion
Mortgage loans payable on real estate
Carrying amount of mortgage notes, related party	0	0
Others	149,626,000	152,173,000
Effective Interest Rate (as a percent)	4.49%
Monthly Debt Service	$ 783,000