2.2.0.25falsefalse0030 - Statement - Consolidated Statements of Cash FlowstruefalseIn Thousandsfalse1falsefalseUSDfalsefalse1/1/2010 - 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$2falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) 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$3falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) 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$5true0us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income.falsefalseCASH FLOWS FROM OPERATING ACTIVITIES:6false0us-gaap_ProfitLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse753514000753514falsetruefalsefalsefalse2truefalsefalse387262000387262falsetruefalsefalsefalse3truefalsefalse599535000599535falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) falsefalseConsolidated Net Income7true0us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseAdjustments to reconcile consolidated net income to net cash provided by operating activities -8false0spg_DepreciationAndAmortizationCashFlowsspgfalsedebitdurationThe cash flow add back for the noncash expense of depreciation and amortization.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse10160270001016027falsefalsefalsefalsefalse2truefalsefalse10094900001009490falsefalsefalsefalsefalse3truefalsefalse956827000956827falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash flow add back for the noncash expense of depreciation and amortization.No authoritative reference available.falsefalseDepreciation and amortization9false0spg_GainsLossesOnExtinguishmentOfDebtCashFlowImpactspgfalsedebitdurationCash flow impact of the difference between the fair value of the payments made and the carrying amount of the debt at the...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse350688000350688falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash flow impact of the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment.No authoritative reference available.falsefalseLoss on debt extinguishment10false0spg_ImpairmentExpensespgfalsedebitdurationImpairment related to consolidated investment properties, investments in unconsolidated entities, and available for sale...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse81690008169falsefalsefalsefalsefalse2truefalsefalse240050000240050falsefalsefalsefalsefalse3truefalsefalse2117200021172falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryImpairment related to consolidated investment properties, investments in unconsolidated entities, and available for sale investment securities.No authoritative reference available.falsefalseImpairment charges11false0spg_AcquisitionOfControllingInterestSaleOrDisposalOfAssetsAndInterestsInUnconsolidatedEntitiesGainOrLossCashFlowspgfalsecreditdurationIn a business combination achieved in stages, this element represents the cash flow effect of the amount of gain or loss...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-321036000-321036falsefalsefalsefalsefalse2truefalsefalse3010800030108falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIn a business combination achieved in stages, this element represents the cash flow effect of the amount of gain or loss recognized by the entity as a result of re-measuring to fair value the equity interest in the acquiree it held before the business combination. Also includes the difference between the carrying value and the sales price for consolidated investment property and equity method investments.No authoritative reference available.falsefalse(Gain) loss upon acquisition of controlling interest, and on sale or disposal of assets and interests in unconsolidated entities, net12false0us-gaap_IncreaseDecreaseInDeferredRentReceivablesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-24487000-24487falsefalsefalsefalsefalse2truefalsefalse-24653000-24653falsefalsefalsefalsefalse3truefalsefalse-33672000-33672falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change during the reporting period in the amount due that is the result of the cumulative difference between actual rent due and rental income recognized on a straight-line basis.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 falsefalseStraight-line rent13false0spg_IncomeLossFromEquityMethodInvestmentsCashFlowspgfalsecreditdurationCash flow impact of the entity's proportionate share for the period of the net income (loss) of its investee (such as...falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-75921000-75921falsefalsefalsefalsefalse2truefalsefalse-40220000-40220falsefalsefalsefalsefalse3truefalsefalse-32246000-32246falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash flow impact of the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment.No authoritative reference available.falsefalseEquity in income of unconsolidated entities14false0us-gaap_EquityMethodInvestmentDividendsOrDistributionsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse109050000109050falsefalsefalsefalsefalse2truefalsefalse105318000105318falsefalsefalsefalsefalse3truefalsefalse118665000118665falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 falsefalseDistributions of income from unconsolidated entities15true0us-gaap_IncreaseDecreaseInOperatingCapitalAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseChanges in assets and liabilities -16false0us-gaap_IncreaseDecreaseInAccountsAndNotesReceivableus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse21440002144falsefalsefalsefalsefalse2truefalsefalse3746500037465falsefalsefalsefalsefalse3truefalsefalse-14312000-14312falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change during the reporting period of the sum of amounts due within one year (or one business cycle) from customers for the credit sale of goods and services; and from note holders for outstanding loans.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 falsefalseTenant receivables and accrued revenue, net17false0us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssetsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-40388000-40388falsefalsefalsefalsefalse2truefalsefalse-28089000-28089falsefalsefalsefalsefalse3truefalsefalse-21295000-21295falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change during the reporting period in the value of this group of assets within the working capital section.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 falsefalseDeferred costs and other assets18false0spg_IncreaseDecreaseInAccountsPayableAccruedExpensesIntangiblesDeferredRevenuesAndOtherLiabilitiesspgfalsedebitdurationThe net change during the reporting period in accounts payable, accrued expenses, intangibles, deferred revenues and other...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-22550000-22550falsefalsefalsefalsefalse2truefalsefalse37890003789falsefalsefalsefalsefalse3truefalsefalse4121300041213falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change during the reporting period in accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities.No authoritative reference available.falsefalseAccounts payable, accrued expenses, intangibles, deferred revenues and other liabilities19false0us-gaap_NetCashProvidedByUsedInOperatingActivitiesus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse17552100001755210falsefalsefalsefalsefalse2truefalsefalse17205200001720520falsefalsefalsefalsefalse3truefalsefalse16358870001635887falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 truefalseNet cash provided by operating activities20true0us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM INVESTING ACTIVITIES:21false0spg_PaymentsToAcquireRealEstateAndInterestsInRealEstatePartnershipsspgfalsecreditdurationCash outflows to Acquire Real Estate and Interests in Real Estate Partnerships.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-976276000-976276falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash outflows to Acquire Real Estate and Interests in Real Estate Partnerships.No authoritative reference available.falsefalseAcquisitions22false0us-gaap_OriginationOfNotesReceivableFromRelatedPartiesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-29500000-29500falsefalsefalsefalsefalse2truefalsefalse-120000000-120000falsefalsefalsefalsefalse3truefalsefalse-8000000-8000falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseFunding of loans to related parties23false0us-gaap_RepaymentOfNotesReceivableFromRelatedPartiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse1050000010500falsefalsefalsefalsefalse2truefalsefalse87000008700falsefalsefalsefalsefalse3truefalsefalse3530000035300falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from a loan, supported by a promissory note, granted to related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 falsefalseRepayments on loans to related parties24false0us-gaap_PaymentsForProceedsFromProductiveAssetsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-256312000-256312falsefalsefalsefalsefalse2truefalsefalse-376275000-376275falsefalsefalsefalsefalse3truefalsefalse-874286000-874286falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from purchases, sales and disposals of property, plant and equipment and other productive assets, including intangibles.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 falsefalseCapital expenditures, net25false0spg_CashIncreaseDecreaseFromConsolidationAndDeconsolidationOfPropertiesIncludingCashAcquiredInAcquisitionsspgfalsedebitdurationThe increase in cash due to including a property's cash in the consolidated entity's cash when they become a subsidiary; or...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2701500027015falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe increase in cash due to including a property's cash in the consolidated entity's cash when they become a subsidiary; or the decrease in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash. Includes cash acquired in acquisitions (i.e. Prime Outlets acquisition, et al).No authoritative reference available.falsefalseCash from acquisitions and cash impact from the consolidation of properties26false0spg_ProceedsFromSaleOfPartnershipInterestsOtherAssetsAndDiscontinuedOperationsNetspgfalsedebitdurationCash inflows from the sale of partnership interests, other assets, and discontinued operations.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse301425000301425falsefalsefalsefalsefalse2truefalsefalse3310600033106falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash inflows from the sale of partnership interests, other assets, and discontinued operations.No authoritative reference available.falsefalseNet proceeds from sale of assets and interest in unconsolidated entities27false0us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliatesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-193925000-193925falsefalsefalsefalsefalse2truefalsefalse-107204000-107204falsefalsefalsefalsefalse3truefalsefalse-137509000-137509falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph b falsefalseInvestments in unconsolidated entities28false0us-gaap_PaymentsToAcquireInvestmentsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-16157000-16157falsefalsefalsefalsefalse2truefalsefalse-132984000-132984falsefalsefalsefalsefalse3truefalsefalse-355994000-355994falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow associated with the purchase of all investments (debt, security, other) during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 17 falsefalsePurchase of marketable and non-marketable securities29false0us-gaap_ProceedsFromSaleAndMaturityOfMarketableSecuritiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2617500026175falsefalsefalsefalsefalse2truefalsefalse7411600074116falsefalsefalsefalsefalse3truefalsefalse89970008997falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (trading, held-to-maturity, or available-for-sale) during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph a falsefalseSale of marketable securities30false0us-gaap_PaymentsToAcquireHeldToMaturitySecuritiesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-433033000-433033falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow to acquire a debt financial instrument for which the entity has the ability and intent to hold until maturity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph a falsefalsePurchase of loans held for investment31false0us-gaap_ProceedsFromSaleOfHeldToMaturitySecuritiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse3757400037574falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph a falsefalseRepayments of loans held for investment32false0spg_DistributionsOfCapitalFromUnconsolidatedEntitiesAndOtherspgfalsedebitdurationCash inflows from unconsolidated entities and other.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse255819000255819falsefalsefalsefalsefalse2truefalsefalse201550000201550falsefalsefalsefalsefalse3truefalsefalse309217000309217falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash inflows from unconsolidated entities and other.No authoritative reference available.falsefalseDistributions of capital from unconsolidated entities and other33false0us-gaap_NetCashProvidedByUsedInInvestingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-1246695000-1246695falsefalsefalsefalsefalse2truefalsefalse-418991000-418991falsefalsefalsefalsefalse3truefalsefalse-1022275000-1022275falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from investing activity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 truefalseNet cash used in investing activities34true0us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCASH FLOWS FROM FINANCING ACTIVITIES:35false0us-gaap_ProceedsFromIssuanceOrSaleOfEquityus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse41660004166falsefalsefalsefalsefalse2truefalsefalse16422280001642228falsefalsefalsefalsefalse3truefalsefalse1110600011106falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow from the issuance of common, preferred, and treasury stocks, stock options, and such forth.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 95 -Paragraph 19 -Subparagraph a falsefalseProceeds from sales of common stock and other36false0us-gaap_PaymentsForRepurchaseOfOtherEquityus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse-16009000-16009falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow to reacquire other equity not otherwise defined in the taxonomy.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 95 -Paragraph 20 -Subparagraph a falsefalsePurchase of limited partner units37false0us-gaap_ProceedsFromRepurchaseOfRedeemablePreferredStockus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-10994000-10994falsefalsefalsefalsefalse2truefalsefalse-87689000-87689falsefalsefalsefalsefalse3truefalsefalse-1845000-1845falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryCash inflows (outflows) from issuing and redeeming redeemable preferred stock; includes convertible and nonconvertible redeemable preferred stock.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 falsefalsePreferred stock redemptions38false0us-gaap_PaymentsToMinorityShareholdersus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-24615000-24615falsefalsefalsefalsefalse2truefalsefalse-30706000-30706falsefalsefalsefalsefalse3truefalsefalse-28251000-28251falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow to return capital to noncontrolled interest, which generally occurs when noncontrolling shareholders reduce their ownership stake (in a subsidiary of the entity). This element does not include dividends paid to noncontrolling shareholders.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 95 -Paragraph 20 -Subparagraph a falsefalseDistributions to noncontrolling interest holders in properties39false0us-gaap_ProceedsFromMinorityShareholdersus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse10580001058falsefalsefalsefalsefalse2truefalsefalse27950002795falsefalsefalsefalsefalse3truefalsefalse40050004005falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity.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 95 -Paragraph 19 -Subparagraph a falsefalseContributions from noncontrolling interest holders in properties40false0spg_DistributionsToPreferredUnitHoldersFinancingActivitiesspgfalsecreditdurationDistributions from earnings to preferred unit holders.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-2315000-2315falsefalsefalsefalsefalse2truefalsefalse-11885000-11885falsefalsefalsefalsefalse3truefalsefalse-17599000-17599falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryDistributions from earnings to preferred unit holders.No authoritative reference available.falsefalsePreferred distributions of the Operating Partnership41false0us-gaap_PaymentsOfOrdinaryDividendsus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-763881000-763881falsefalsefalsefalsefalse2truefalsefalse-148507000-148507falsefalsefalsefalsefalse3truefalsefalse-852446000-852446falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow from distribution of an entity's earnings to common and preferred stockholders, including minority shareholders. This element excludes special dividends, which are included in a separate element for capital distributions.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 95 -Paragraph 20 -Subparagraph a falsefalsePreferred dividends and distributions to stockholders42false0us-gaap_PaymentsOfDividendsMinorityInterestus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-153247000-153247falsefalsefalsefalsefalse2truefalsefalse-25658000-25658falsefalsefalsefalsefalse3truefalsefalse-205850000-205850falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow for the return on capital for noncontrolled interest in the entity.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 95 -Paragraph 20 -Subparagraph a falsefalseDistributions to limited partners43false0us-gaap_ExtinguishmentOfDebtGainLossNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-350688000-350688falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 145 -Paragraph A5 falsefalseLoss on debt extinguishment44false0us-gaap_ProceedsFromIssuanceOfLongTermDebtAndCapitalSecuritiesNetus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse38588150003858815falsefalsefalsefalsefalse2truefalsefalse32207060003220706falsefalsefalsefalsefalse3truefalsefalse44569750004456975falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer.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 95 -Paragraph 19 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a falsefalseMortgage and other indebtedness proceeds, net of transaction costs45false0us-gaap_RepaymentsOfLongTermDebtAndCapitalSecuritiesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-6227814000-6227814falsefalsefalsefalsefalse2truefalsefalse-2678639000-2678639falsefalsefalsefalsefalse3truefalsefalse-3692136000-3692136falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe cash outflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. The nature of such security interests included herein may consist of debt securities, long-term capital lease obligations, and capital securities.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 95 -Paragraph 20 -Subparagraph b falsefalseMortgage and other indebtedness principal payments46false0us-gaap_NetCashProvidedByUsedInFinancingActivitiesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-3669515000-3669515falsefalsefalsefalsefalse2truefalsefalse18826450001882645falsefalsefalsefalsefalse3truefalsefalse-342050000-342050falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net cash inflow (outflow) from financing activity for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 truefalseNet cash (used in) provided by financing activities47false0us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-3161000000-3161000falsefalsefalsefalsefalse2truefalsefalse31841740003184174falsefalsefalsefalsefalse3truefalsefalse271562000271562falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net change between the beginning and ending balance of cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 truefalse(DECREASE)/INCREASE IN CASH AND CASH EQUIVALENTS48false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse39577180003957718falsefalsefalsefalsefalse2truefalsefalse773544000773544falsefalsefalsefalsefalse3truefalsefalse501982000501982falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCASH AND CASH EQUIVALENTS, beginning of year49false0us-gaap_CashAndCashEquivalentsAtCarryingValueus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse796718000796718falsetruefalsefalsefalse2truefalsefalse39577180003957718falsetruefalsefalsefalse3truefalsefalse773544000773544falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryIncludes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 falsefalseCASH AND CASH EQUIVALENTS, end of year345Consolidated Statements of Cash Flows (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue