2.2.0.25truefalse4100 - Disclosure - Equity (Details)truefalseIn Millions, except Share data, unless otherwise specifiedfalse1falsefalsefalsefalse8/1/2010 - 8/31/2010 D2010Q3_M08http://www.sec.gov/CIK0001063761duration2010-08-01T00:00:002010-08-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli02falsefalsefalsefalse5/1/2010 - 5/31/2010 D2010Q2_M05http://www.sec.gov/CIK0001063761duration2010-05-01T00:00:002010-05-31T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli03falsefalseUSDfalsefalse4/1/2010 - 4/30/2010 USD ($) $D2010Q2_M04http://www.sec.gov/CIK0001063761duration2010-04-01T00:00:002010-04-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $D2010http://www.sec.gov/CIK0001063761duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$5falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $D2009http://www.sec.gov/CIK0001063761duration2009-01-01T00:00:002009-12-31T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$6falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) USD ($) / shares $D2008http://www.sec.gov/CIK0001063761duration2008-01-01T00:00:002008-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDPerShareDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$7falsefalsetruefalse{us-gaap_StatementClassOfStockAxis} : 6% Series I Convertible Perpetual Preferred Stock 1/1/2010 - 12/31/2010 D2010_SeriesI6PercentConvertiblePerpetualPreferredStockMember_Ehttp://www.sec.gov/CIK0001063761duration2010-01-01T00:00:002010-12-31T00:00:00falsefalse6% Series I Convertible Perpetual Preferred Stockus-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldispg_SeriesI6PercentConvertiblePerpetualPreferredStockMemberus-gaap_StatementClassOfStockAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli08falsefalsetruefalse{us-gaap_StatementClassOfStockAxis} : 6% Series I Convertible Perpetual Preferred Stock 1/1/2004 - 12/31/2004 D2004_SeriesI6PercentConvertiblePerpetualPreferredStockMember_Ehttp://www.sec.gov/CIK0001063761duration2004-01-01T00:00:002004-12-31T00:00:00falsefalse6% Series I Convertible Perpetual Preferred Stockus-gaap_StatementClassOfStockAxisxbrldihttp://xbrl.org/2006/xbrldispg_SeriesI6PercentConvertiblePerpetualPreferredStockMemberus-gaap_StatementClassOfStockAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli09falsefalseUSDtruefalse{us-gaap_StatementEquityComponentsAxis} : Common Stock 1/1/2010 - 12/31/2010 USD ($) $D2010_CommonStockMemberhttp://www.sec.gov/CIK0001063761duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseCommon Stockus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10falsefalsetruefalse{us-gaap_StatementEquityComponentsAxis} : Common Stock 12/31/1998 I1998_CommonStockMemberhttp://www.sec.gov/CIK0001063761instant1998-12-31T00:00:000001-01-01T00:00:00falsefalseCommon Stockus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli011falsefalsetruefalse{us-gaap_StatementEquityComponentsAxis} : Common Stock {us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : MSA 1/1/1993 - 12/31/1993 D1993_MelvinSimonAndAssociatesIncMember_CommonStockMemberhttp://www.sec.gov/CIK0001063761duration1993-01-01T00:00:001993-12-31T00:00:00falsefalseCommon Stockus-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CommonStockMemberus-gaap_StatementEquityComponentsAxisexplicitMemberfalsefalseMSAus-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldispg_MelvinSimonAndAssociatesIncMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberSharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli012falsefalsetruefalse{us-gaap_RelatedPartyTransactionsByRelatedPartyAxis} : MSA 1/1/1993 - 12/31/1993 D1993_MelvinSimonAndAssociatesIncMemberhttp://www.sec.gov/CIK0001063761duration1993-01-01T00:00:001993-12-31T00:00:00falsefalseMSAus-gaap_RelatedPartyTransactionsByRelatedPartyAxisxbrldihttp://xbrl.org/2006/xbrldispg_MelvinSimonAndAssociatesIncMemberus-gaap_RelatedPartyTransactionsByRelatedPartyAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli02true0us-gaap_ClassOfStockLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseEquity3false0us-gaap_CommonStockVotingRightsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00one vote for each share held of recordone vote for each share held of recordfalsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringDescription of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 falsefalseCommon stock, voting rights4false0spg_RightToElectNumberOfBoardOfDirectorsspgfalsenadurationRepresents the number of board of directors' members that can be elected by a person or a group.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12truefalsefalse44falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerRepresents the number of board of directors' members that can be elected by a person or a group.No authoritative reference available.falsefalseRight to elect number of board of directors5false0spg_StockIssuedDuringPeriodSharesRelatedPartyspgfalsenadurationNumber of shares of stock issued during the period to related parties.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11truefalsefalse32000003200000falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesNumber of shares of stock issued during the period to related parties.No authoritative reference available.falsefalseShares issued to related party (in shares)6false0us-gaap_CommonStockCapitalSharesReservedForFutureIssuanceus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse6291985362919853falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse32000003200000falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesAggregate number of common shares reserved for future issuance.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 falsefalseCommon stock reserved for possible conversion (in shares)7false0spg_ConvertibleClassBSharesOutstandingConditionedUpon1998CharterspgfalsenainstantThe number of Class B shares outstanding as of the balance sheet date.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10truefalsefalse80008000falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesThe number of Class B shares outstanding as of the balance sheet date.No authoritative reference available.falsefalseClass B shares outstanding under the 1998 Charter8false0us-gaap_StockIssuedDuringPeriodSharesConversionOfUnitsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse247640247640falsefalsefalsefalsefalse5truefalsefalse18664741866474falsefalsefalsefalsefalse6truefalsefalse25746082574608falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesThe number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real investment trust unit (UPREIT unit).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 5 falsefalseShares of common stock issued to limited partners in exchange for units9false0spg_LimitedPartnersNumberExchangingUnitsspgfalsenadurationThe number of limited partners that exchanged units for shares of common stock.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse4747falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerThe number of limited partners that exchanged units for shares of common stock.No authoritative reference available.falsefalseNumber of limited partners exchanging units10false0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercisedus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse178683178683falsefalsefalsefalsefalse5truefalsefalse181850181850falsefalsefalsefalsefalse6truefalsefalse282106282106falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesNumber of shares issued during the period as a result of the exercise of stock options.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 falsefalseCommon stock issued related to employee and director stock options exercised (in shares)11false0us-gaap_ProceedsFromStockOptionsExercisedus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse49000004.9falsetruefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow associated with the amount received from holders exercising their stock options.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseNet proceeds of option exercises (in dollars)12false0spg_PreferredStockConvertedDuringPeriodSharesspgfalsenadurationNumber of shares of preferred stock converted to common stock during the period.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse66705896670589falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7truefalsefalse66705896670589falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesNumber of shares of preferred stock converted to common stock during the period.No authoritative reference available.falsefalseSeries I Preferred Stock converted to common stock (in shares)13false0spg_CommonStockIssuedDuringPeriodConversionOfPreferredStockspgfalsenadurationNumber of shares of common stock issued as a result of the conversion of preferred stock.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse78712767871276falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7truefalsefalse78712767871276falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:sharesItemTypesharesNumber of shares of common stock issued as a result of the conversion of preferred stock.No authoritative reference available.falsefalseCommon stock issued as a result of the conversion of Series I Preferred Stock (in shares)14false0spg_TemporaryEquityDividendRatePercentagespgfalsenadurationThe percentage of dividend rate on temporary equity.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsetruefalse8truetruefalse0.060.06falsefalsefalsetruefalse9falsetruefalse00falsefalsefalsetruefalse10falsetruefalse00falsefalsefalsetruefalse11falsetruefalse00falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalseOtherus-types:percentItemTypepureThe percentage of dividend rate on temporary equity.No authoritative reference available.falsefalseTemporary equity stated dividend rate percentage (as a percent)15false0spg_NumberOfUnitsIssuedInConnectionWithAcquisitionsspgfalsenadurationThis element represent number of units issued by operating partnership in connection with the acquisition.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse17206711720671falsefalsefalsefalsefalse2truefalsefalse7779877798falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseSharesxbrli:integerItemTypeintegerThis element represent number of units issued by operating partnership in connection with the acquisition.No authoritative reference available.falsefalseOperating Partnership issued units in connection with the acquisition16false0spg_NumberOfOutletCentersAcquiredspgfalsenadurationThe number of outlet centers acquired in connection with the Prime acquisition.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2020falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerThe number of outlet centers acquired in connection with the Prime acquisition.No authoritative reference available.falsefalseThe number of outlet centers acquired in connection with Prime acquisition.1215Equity (Details) (USD $)HundredThousandsNoRoundingUnKnownUnKnowntruetrue