2.2.0.25truefalse4010 - Disclosure - Organization (Details)truefalsefalse1falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico 12/31/2010 I2010_UnitedStatesAndPuertoRicoMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli02falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Regional Malls 12/31/2010 I2010_UnitedStatesAndPuertoRicoMember_RegionalMallsMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseRegional Mallsspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_RegionalMallsMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli03falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Regional Malls {spg_PropertiesAcquiredOriginAxis} : The Mills acquisition 12/31/2010 I2010_TheMillsAcquisitionMember_UnitedStatesAndPuertoRicoMember_RegionalMallsMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseRegional Mallsspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_RegionalMallsMemberspg_PropertiesByTypeAxisexplicitMemberfalsefalseThe Mills acquisitionspg_PropertiesAcquiredOriginAxisxbrldihttp://xbrl.org/2006/xbrldispg_TheMillsAcquisitionMemberspg_PropertiesAcquiredOriginAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli04falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Premium Outlet Centers 12/31/2010 I2010_UnitedStatesAndPuertoRicoMember_PremiumOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalsePremium Outlet Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_PremiumOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli05falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Community/Lifestyle Centers 12/31/2010 I2010_UnitedStatesAndPuertoRicoMember_CommunityLifestyleCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseCommunity/Lifestyle Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_CommunityLifestyleCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli06falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Community/Lifestyle Centers {spg_PropertiesAcquiredOriginAxis} : The Mills acquisition 12/31/2010 I2010_TheMillsAcquisitionMember_UnitedStatesAndPuertoRicoMember_CommunityLifestyleCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseCommunity/Lifestyle Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_CommunityLifestyleCentersMemberspg_PropertiesByTypeAxisexplicitMemberfalsefalseThe Mills acquisitionspg_PropertiesAcquiredOriginAxisxbrldihttp://xbrl.org/2006/xbrldispg_TheMillsAcquisitionMemberspg_PropertiesAcquiredOriginAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli07falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : Other shopping centers or outlet centers 12/31/2010 I2010_UnitedStatesAndPuertoRicoMember_OtherShoppingCentersOrOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseOther shopping centers or outlet centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_OtherShoppingCentersOrOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli08falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesByTypeAxis} : The Mills {spg_PropertiesAcquiredOriginAxis} : The Mills acquisition 12/31/2010 I2010_TheMillsAcquisitionMember_UnitedStatesAndPuertoRicoMember_TheMillsMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseThe Millsspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_TheMillsMemberspg_PropertiesByTypeAxisexplicitMemberfalsefalseThe Mills acquisitionspg_PropertiesAcquiredOriginAxisxbrldihttp://xbrl.org/2006/xbrldispg_TheMillsAcquisitionMemberspg_PropertiesAcquiredOriginAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli09falsefalsetruefalse{spg_PropertiesByLocationAxis} : U.S. and Puerto Rico {spg_PropertiesAcquiredOriginAxis} : The Mills acquisition 12/31/2010 I2010_TheMillsAcquisitionMember_UnitedStatesAndPuertoRicoMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseU.S. and Puerto Ricospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_UnitedStatesAndPuertoRicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseThe Mills acquisitionspg_PropertiesAcquiredOriginAxisxbrldihttp://xbrl.org/2006/xbrldispg_TheMillsAcquisitionMemberspg_PropertiesAcquiredOriginAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli010falsefalsetruefalse{spg_PropertiesByLocationAxis} : Italy {spg_PropertiesByTypeAxis} : Other shopping centers or outlet centers 12/31/2010 I2010_ItalyMember_OtherShoppingCentersOrOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseItalyspg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_ItalyMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseOther shopping centers or outlet centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_OtherShoppingCentersOrOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli011falsefalsetruefalse{spg_PropertiesByLocationAxis} : Japan {spg_PropertiesByTypeAxis} : Premium Outlet Centers 12/31/2010 I2010_JapanMember_PremiumOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseJapanspg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_JapanMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalsePremium Outlet Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_PremiumOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli012falsefalsetruefalse{spg_PropertiesByLocationAxis} : Mexico {spg_PropertiesByTypeAxis} : Premium Outlet Centers 12/31/2010 I2010_MexicoMember_PremiumOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseMexicospg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_MexicoMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalsePremium Outlet Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_PremiumOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli013falsefalsetruefalse{spg_PropertiesByLocationAxis} : South Korea {spg_PropertiesByTypeAxis} : Premium Outlet Centers 12/31/2010 I2010_SouthKoreaMember_PremiumOutletCentersMemberhttp://www.sec.gov/CIK0001063761instant2010-12-31T00:00:000001-01-01T00:00:00falsefalseSouth Koreaspg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_SouthKoreaMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalsePremium Outlet Centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_PremiumOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli014falsefalsetruefalse{spg_PropertiesByLocationAxis} : France and Poland {spg_PropertiesByTypeAxis} : Other shopping centers or outlet centers 1/1/2010 - 12/31/2010 D2010_FranceAndPolandMember_OtherShoppingCentersOrOutletCentersMemberhttp://www.sec.gov/CIK0001063761duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseFrance and Polandspg_PropertiesByLocationAxisxbrldihttp://xbrl.org/2006/xbrldispg_FranceAndPolandMemberspg_PropertiesByLocationAxisexplicitMemberfalsefalseOther shopping centers or outlet centersspg_PropertiesByTypeAxisxbrldihttp://xbrl.org/2006/xbrldispg_OtherShoppingCentersOrOutletCentersMemberspg_PropertiesByTypeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli02true0spg_ScheduleOfPropertiesLineItemsspgfalsenadurationLine items represent properties.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringLine items represent properties.falsefalseOwned, developed and managed retail properties:3false0spg_IncomeProducingPropertiesNumberspgfalsenainstantThe number of income producing properties owned or in which an ownership interest is held.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse338338falsefalsefalsetruefalse2truefalsefalse161161falsefalsefalsetruefalse3truefalsefalse1616falsefalsefalsetruefalse4truefalsefalse5858falsefalsefalsetruefalse5truefalsefalse6666falsefalsefalsetruefalse6truefalsefalse44falsefalsefalsetruefalse7truefalsefalse1717falsefalsefalsetruefalse8truefalsefalse1616falsefalsefalsetruefalse9truefalsefalse3636falsefalsefalsetruefalse10truefalsefalse4545falsefalsefalsetruefalse11truefalsefalse88falsefalsefalsetruefalse12truefalsefalse11falsefalsefalsetruefalse13truefalsefalse11falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerThe number of income producing properties owned or in which an ownership interest is held.No authoritative reference available.falsefalseNumber of income-producing properties4false0spg_StatesPropertiesLocatedNumberspgfalsenainstantThe number of states in the United States in which the entity owns or has an ownership interest in income-producing...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse4141falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerThe number of states in the United States in which the entity owns or has an ownership interest in income-producing properties.No authoritative reference available.falsefalseNumber of U.S. states containing property locations5false0spg_NumberOfPropertiesSoldspgfalsenadurationThe number of properties which were sold.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsetruefalse2falsefalsefalse00falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalse4falsefalsefalse00falsefalsefalsetruefalse5falsefalsefalse00falsefalsefalsetruefalse6falsefalsefalse00falsefalsefalsetruefalse7falsefalsefalse00falsefalsefalsetruefalse8falsefalsefalse00falsefalsefalsetruefalse9falsefalsefalse00falsefalsefalsetruefalse10falsefalsefalse00falsefalsefalsetruefalse11falsefalsefalse00falsefalsefalsetruefalse12falsefalsefalse00falsefalsefalsetruefalse13falsefalsefalse00falsefalsefalsetruefalse14truefalsefalse77falsefalsefalsetruefalseOtherxbrli:integerItemTypeintegerThe number of properties which were sold.No authoritative reference available.falsefalseNumber of non-core assets in Poland sold by Simon Ivanhoe144Organization (Details)UnKnownUnKnownUnKnownUnKnowntruetrue