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Noncontrolling Interests: (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
NonControlling Interests: [Abstract]
Limited partnership interest of the operating partnership (as a percent)	7.00%
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Number of trading days used to calculate redemption value	10 days
Redemption value of outstanding OP Units not owned by the Company	$ 587,917	$ 586,409
Outside ownership interests in Shoppingtown Mall, purchase option	$ 11,366		$ 0

X

- Definition

Represents the aggregate redemption value for the noncontrolling interest.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the number of trading days prior to the balance sheet date over which the closing price per share of the entity's common stock is averaged to arrive at the redemption value per unit for the noncontrolling interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	mac_
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X

- Details

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Namespace Prefix:	mac_
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X

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

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X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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X

- Definition

Carrying amount, attributable to noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

+ References

No definition available.

+ Details

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