Percentage of voting equity interests acquired by all parties to a joint venture in the business combination.

No definition available.

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- Definition

The additional percentage of ownership of common stock or equity participation acquired in the investee accounted for under the equity method of accounting.

+ References

No definition available.

+ Details

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- Definition

Represents the pro rata share of the amount of gain or loss resulting from sale of property by an equity method investment of the entity.

+ References

No definition available.

+ Details

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- Definition

Represents the pro rata share of the amount of gain (loss) resulting from sale of property by an equity method investment of the entity attributable to noncontrolling interest.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership by all parties to a joint venture of common stock or equity participation in the investee accounted for under the equity method of accounting, prior to the acquisition of additional interest.

+ References

No definition available.

+ Details

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- Definition

Represents the total purchase price paid by all parties to a joint venture for an investment accounted for by the entity under the equity method of accounting.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting, prior to the acquisition of additional interest.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership by other joint venture partners of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

No definition available.

+ Details

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- Definition

Represents the pro rata share of the amount of gain or loss resulting from either the difference between the carrying value and the sales price or remeasurement of the carrying value of assets during the period as reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting that was sold by the entity during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of gain or loss resulting from either the difference between the carrying value and the sales price or remeasurement of the carrying value of assets during the period, reported by an equity method investment of the entity.

+ References

No definition available.

+ Details

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Represents the number of anchor locations exchanged as part of the consideration for the acquisition of interests in other properties.

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No definition available.

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- Definition

Represents the number of regional malls distributed by the investee to the outside partner.

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No definition available.

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- Definition

Represents the number of regional shopping centers distributed to the Company during the period.

+ References

No definition available.

+ Details

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- Definition

Represents the number of regional shopping centers owned by the investee.

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No definition available.

+ Details

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- Definition

Cash inflows from the sale of partnership interests, other assets, and discontinued operations.

+ References

No definition available.

+ Details

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- Definition

Area of a real estate property.

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No definition available.

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- Definition

Amount of gain (loss) from the disposal of an asset through means other than sale, for example, but not limited to, abandonment, spin-off, and expropriation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2611-110228

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-Topic 360

-SubTopic 10

-Section 40

-Paragraph 4

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- Definition

Amount of cash paid to acquire the entity.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 51

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Percentage of voting equity interests acquired in the business combination.

+ References

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- Definition

In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (g)(2)

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-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph q(2)

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-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

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- Definition

The amount of cash distributions paid to a common shareholder or unit-holder by a LLC or LP.

+ References

No definition available.

+ Details

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- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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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 210.5-02.12)

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 12

-Article 5

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- Definition

This item represents the amount of net sales proceeds received on disposal of an equity method investment.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 35

-Paragraph 35

-URI http://asc.fasb.org/extlink&oid=7658923&loc=d3e32847-111569

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

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- Definition

This item represents the amount of gain (loss) arising from the disposal of an equity method investment.

+ References

No definition available.

+ Details

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- Definition

The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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The value of notes retired (or transferred to another entity) in noncash investing or financing transactions.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 13

-Subparagraph (b)

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 16

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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-Name Statement of Financial Accounting Standard (FAS)

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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No definition available.

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Investments in Unconsolidated Joint Ventures: (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended		1 Months Ended		3 Months Ended	9 Months Ended		1 Months Ended	3 Months Ended	9 Months Ended							1 Months Ended		1 Months Ended			1 Months Ended			1 Months Ended				1 Months Ended			1 Months Ended	9 Months Ended		1 Months Ended	9 Months Ended		1 Months Ended		1 Months Ended	9 Months Ended	0 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2011 GGP Exchange store	Jun. 03, 2011 GGP Exchange	Jun. 30, 2011 GGP Exchange Mervyn's entity	Jun. 30, 2011 Superstition Springs Land	Sep. 30, 2011 Superstition Springs Land	Sep. 30, 2011 Superstition Springs Land	Jun. 03, 2011 Superstition Springs Land	Feb. 28, 2011 Desert Sky Mall squarefoot	Sep. 30, 2011 Desert Sky Mall	Sep. 30, 2011 Desert Sky Mall	Dec. 31, 2011 Eastland Mall	Dec. 31, 2011 Lake Square Mall	Dec. 31, 2011 SouthPark Mall	Dec. 31, 2011 Southridge Mall	Dec. 31, 2011 NorthPark Mall	Dec. 31, 2011 Valley Mall	Feb. 28, 2011 Kierland Commons Investment LLC	Feb. 24, 2011 Kierland Commons Investment LLC	Feb. 28, 2011 Kierland Commons Investment LLC Kierland Commons	Feb. 24, 2011 Kierland Commons Investment LLC Kierland Commons squarefoot	Feb. 28, 2011 The Shops at Atlas Park squarefoot	Dec. 31, 2011 SDG Macerich Properties, L. P. item	Apr. 30, 2011 SDG Macerich Properties, L. P.	Dec. 30, 2011 SDG Macerich Properties, L. P.	Jun. 30, 2011 Arrowhead Towne Center	Oct. 26, 2012 Arrowhead Towne Center	Sep. 30, 2012 Arrowhead Towne Center	Jun. 03, 2011 Arrowhead Towne Center	Jun. 30, 2011 Superstition Springs Center	Sep. 30, 2012 Superstition Springs Center	Jun. 03, 2011 Superstition Springs Center	Mar. 31, 2012 Chandler Village Center, LLC	Sep. 30, 2012 Chandler Village Center, LLC	Mar. 30, 2012 Chandler Village Center, LLC squarefoot	Mar. 31, 2012 Chandler Festival	Sep. 30, 2012 Chandler Festival	Mar. 30, 2012 Chandler Festival squarefoot	Mar. 31, 2012 SanTan Village Power Center	Mar. 30, 2012 SanTan Village Power Center squarefoot	May 31, 2012 Chandler Gateway squarefoot	Sep. 30, 2012 Chandler Gateway	Aug. 10, 2012 NorthPark Center squarefoot	Sep. 30, 2012 NorthPark Center	Sep. 30, 2012 NorthPark Center
Investments in unconsolidated joint ventures:
Property square footage												893,000												433,000	376,000													273,439			500,426		491,037	259,535		1,946,178
Total purchase price																								$ 105,550	$ 53,750
Purchase price on acquisition												27,625
Purchase price																							34,162																							118,810
Purchase price funded by cash payment on acquisition						75,000						1,875
Purchase price paid through assumption of debt by the Company				192,566								25,750											18,613
Percentage ownership before additional interest acquired																						24.50%
Percentage ownership by all joint venture partners before additional interest acquired																								49.00%
Ownership percentage in joint ventures																						50.00%			50.00%			50.00%		33.30%	66.70%	66.70%		66.70%	66.70%
Total ownership percentage acquired by all joint venture partners																								100.00%
Ownership percentage in property on completion of acquisition											100.00%	100.00%			100.00%	100.00%	100.00%	100.00%	100.00%	100.00%
Other joint venture partners' ownership percentage in joint ventures																									50.00%			50.00%
Gain (loss) on sale or remeasurement of assets	(28)	(94)	22,938	24,451																	25,019																					23,307
Remeasurement gain on acquisition of additional interest, pro rata share																					12,510
Company's share of total purchase price																									26,875
Additional ownership interest acquired (as a percent)								50.00%				50.00%		50.00%															33.30%				33.30%
Loan paid off												51,500																														45,000
Share of gain on conveyance of Granite Run Mall																											7,753
Number of anchor locations exchanged					6		5
Gain on purchase of remaining interest in property								1,734	1,734	1,734		1,868	30	1,868												188,264
Number of regional shopping centers owned by investee																										11
Number of assets distributed to the Company																										6
Number of regional malls distributed by the investee to the outside partner																										5
Percentage of ownership interest sold																																				50.00%			50.00%					50.00%
Consideration received on sale of joint venture interest																																				14,795			30,975					14,315
Gain on sale of investments in unconsolidated entity																																					8,185			12,347					3,365		24,590	24,590
Cash proceeds for sale of interest in property			130,691	6,255																																6,045			16,183					4,921
Mortgage note assumed by purchaser as sale consideration			185,000																																	8,750			14,792					9,394
Proceeds from sale of property																																										54,780
Gain on sale of property, pro rata share																																										11,504
Cash distributed to the partners																																										9,780
Gain on sale of property, pro rata share included in net income attributable to noncontrolling interests																																										$ 3,566