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Investments in Unconsolidated Joint Ventures - Balance Sheet Footnotes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Investments in unconsolidated joint ventures:
Mortgage notes payable that could become recourse debt to the Company	$ 33,540		$ 33,540		$ 33,540
Indemnity of guaranteed amount	16,770		16,770		16,770
Amortization of difference between cost of investments and book value of underlying equity	948	3,860	3,227	9,753
Northwestern Mutual Life (NML)
Investments in unconsolidated joint ventures:
Mortgage notes payable to affiliate	703,589		703,589		712,455
Interest expense on borrowings from related party	$ 9,645	$ 7,920	$ 28,992	$ 21,717

X

- Definition

The item represents the amortization during the period of the difference between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

No definition available.

+ Details

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X

- Definition

The amount for notes payable due to related parties reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

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X

- Definition

The amount of interest expense on a debt or other obligation to a related party reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	mac_
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X

- Definition

The portion of the amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees that is indemnified by a third party.

+ References

No definition available.

+ Details

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Namespace Prefix:	mac_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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