The percentage rate used to calculate distribution payments on preferred units.

No definition available.

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- Definition

The annual preferred distribution rate increase on the PJV units increases to 9.0% beginning July 1, 2013, if CWJV does not redeem the PJV units with qualifying property.

+ References

No definition available.

+ Details

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- Definition

The annual reduction amount to the Guarantor's Obligations.

+ References

No definition available.

+ Details

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- Definition

If the Company exercises their right to offer to redeem the preferred joint venture units on or before August 1, 2013, then the preferred liquidation value will be reduced by $10.0 million so long as Westfield does not reject the offer and the redemption closes on or before September 30, 2013.

+ References

No definition available.

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- Definition

Annual coverage limit provided by the insurance arrangement for environmental liability claims.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Maximum coverage per environmental liability clean up claim provided by the insurance arrangement.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Portion of the loan amount guaranteed by the company based on the guaranty percentage.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Minimum potential amount of future payments (undiscounted) the company could be required to make under the guarantee or each group of similar guarantees after reductions.

+ References

No definition available.

+ Details

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- Definition

Percentage of third party construction loan guaranteed by the company.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Carrying value of a short-term or long-term real estate loan on the purchase of land.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Company's maximum guaranteed amount after loans were partially paid down.

+ References

No definition available.

+ Details

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- Definition

Number of extension options available.

+ References

No definition available.

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Period Type:	instant

- Details

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- Definition

Preferred Liquidation Value on Early Redemption

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Joint venture agreed to reimburse a percentage amount to the Guarantor for Fund Obligations.

+ References

No definition available.

+ Details

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- Definition

This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

+ 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 210.5-02.19(a)(1))

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20

-Article 5

+ Details

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Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

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

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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 Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Details

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- 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.

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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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- Definition

Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 5

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12201-110248

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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No definition available.

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- Definition

This element represents the current and noncurrent portions of a long-term real estate loan with an initial maturity beyond one year or beyond the normal operating cycle, if longer, to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

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

-Publisher SEC

-Name Regulation S-X (SX)

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-Article 5

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Article 5

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-Name Accounting Standards Codification

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Name Accounting Standards Codification

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-Subparagraph (SX 210.7-03.16)

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-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20,22)

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

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

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-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (a)

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- Definition

Amount of letters of credit and other surety bonds that are available for the future payment of malpractice claims.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 954

-SubTopic 450

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624

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- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

No definition available.

+ Details

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Contingencies (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended			9 Months Ended				9 Months Ended
	Jun. 30, 2013	Sep. 30, 2013	Dec. 31, 2012	Mar. 31, 2010 Promenade Diberville Llc [Member]	Sep. 30, 2013 Fremaux Town Center JV, LLC [Member]	Sep. 30, 2013 CW Joint Venture [Member]	Sep. 30, 2013 Lee Summit [Member]	Dec. 31, 2012 Lee Summit [Member]	Sep. 30, 2013 West Melbourne I LLC [Member]	Sep. 30, 2013 Port Orange I LLC [Member]	Dec. 31, 2012 Port Orange I LLC [Member]	Sep. 30, 2013 York Town Center LP [Member]	Sep. 30, 2013 JG Gulf Coast Town Center LLC [Member]	Sep. 30, 2013 JG Gulf Coast Town Center LLC [Member]	Sep. 30, 2013 Fremaux Town Center JV, LLC [Member] Extension_Options	Sep. 30, 2013 Promenade Diberville Llc [Member]	Sep. 30, 2013 Redeemable Noncontrolling Partnership Interests CW Joint Venture [Member]	Sep. 30, 2013 Accrued and unpaid preferred return [Member] CW Joint Venture [Member]
Guarantor Obligations [Line Items]
Retainage allegedly owed under the construction contract				$ 327
Litigation Settlement, Amount																8,240
Environmental Liabiltiy Insurance, Maximum Coverage Per Incident		10,000
Environmental Liability Insurance, Annual Coverage Limit.		50,000
Payments for Repurchase of Redeemable Noncontrolling Interest						412,986											408,577	4,409
Annual preferred distribution (in hundredths)						5.00%
Annual preferred distribution rate on PJV units increase (in hundredths)						9.00%
Reduction to preferred liquidation value of PJV units						10,000
Preferred Liquidation Value on Early Redemption						418,577
Guarantees [Abstract]
Guaranteed percentage of the third party's construction loan and bond line of credit (the loans) (in hundredths)							27.00%		100.00%	100.00%			100.00%		100.00%
Percentage of Equity Interest in Real Estate Property									50.00%	50.00%		50.00%	50.00%	50.00%	65.00%
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases															46,000
Initial maximum guaranteed amount of third party's construction loan												22,000
Maximum guarantee obligation after loans were partially paid down							14,931		43,575	62,514			6,395
Total amount outstanding on the loans							49,817		43,575	62,514			6,395		11,364
Debt Instrument, Maturity Date	May 31, 2015													Jul. 06, 2015	Mar. 18, 2016
Number of Extension Options Available									1	1					2
Guaranteed amount of the outstanding loan							13,451					17,200
Guarantees, Fair Value Disclosure					460		192	192	478	961	961
Guaranteed minimum exposure amount												10,000
Annual reductions to the guarantor's obligations												800
Percentage of guaranty obligation agreed to be reimbursed by joint venture partner (in hundredths)												50.00%
Performance Bonds [Abstract]
Malpractice Loss Contingency, Letters of Credit and Surety Bonds		23,501	29,211
Land loan									2,675
Construction loan									$ 40,900