1.0.0.3 false Consolidated Condensed Statements of Cash Flows (Unaudited) (USD $) In Thousands false 1 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 5 Cash flows from operating activities: 3 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 6 Net income 4 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 207467000 207467 false false 2 true true 498831000 498831 false false No definition available. No authoritative reference available. false 7 Adjustments to reconcile net income to net cash provided by operating activities: 4 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 8 Depreciation and amortization 5 us-gaap_DepreciationAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 182807000 182807 false false 2 false true 104419000 104419 false false No definition available. No authoritative reference available. false 9 Deferred income tax provision 5 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 8286000 8286 false false 2 false true -5108000 -5108 false false No definition available. No authoritative reference available. false 10 Increase in LIFO inventory reserves 5 sii_IncreaseDecreaseInLIFOInventoryReserve sii false debit duration monetary Increase (decrease) in LIFO inventory reserves. false false false false false false false false false 1 false true 4969000 4969 false false 2 false true 28909000 28909 false false Increase (decrease) in LIFO inventory reserves. No authoritative reference available. false 11 Share-based compensation expense 5 us-gaap_ShareBasedCompensation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 23139000 23139 false false 2 false true 20868000 20868 false false No definition available. No authoritative reference available. false 12 Provision for losses on receivables 5 us-gaap_ProvisionForDoubtfulAccounts us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 7346000 7346 false false 2 false true 1908000 1908 false false No definition available. No authoritative reference available. false 13 Foreign currency translation gains 5 us-gaap_ForeignCurrencyTransactionGainLossUnrealized us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -5611000 -5611 false false 2 false true -846000 -846 false false No definition available. No authoritative reference available. false 14 Gain on disposal of property, plant and equipment 5 us-gaap_GainLossOnSaleOfPropertyPlantEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -22364000 -22364 false false 2 false true -16658000 -16658 false false No definition available. No authoritative reference available. false 15 Equity earnings, net of dividends received 5 us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -6549000 -6549 false false 2 false true -10686000 -10686 false false No definition available. No authoritative reference available. false 16 Changes in operating assets and liabilities: 4 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 17 Receivables 5 us-gaap_IncreaseDecreaseInReceivables us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 518720000 518720 false false 2 false true -188565000 -188565 false false No definition available. No authoritative reference available. false 18 Inventories 5 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 266775000 266775 false false 2 false true -283281000 -283281 false false No definition available. No authoritative reference available. false 19 Accounts payable 5 us-gaap_IncreaseDecreaseInAccountsPayable us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -384502000 -384502 false false 2 false true 160275000 160275 false false No definition available. No authoritative reference available. false 20 Other current assets and liabilities 5 us-gaap_IncreaseDecreaseInOperatingCapital us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -117778000 -117778 false false 2 false true -38922000 -38922 false false No definition available. No authoritative reference available. false 21 Other non-current assets and liabilities 5 sii_OthersNonCurrentAssetsAndLiabilities sii false credit duration monetary Other non-current assets and liabilities. false false false false false false false false false 1 false true -31451000 -31451 false false 2 false true -8380000 -8380 false false Other non-current assets and liabilities. No authoritative reference available. true 22 Net cash provided by operating activities 5 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 651254000 651254 false false 2 false true 262764000 262764 false false No definition available. No authoritative reference available. true 23 Cash flows from investing activities: 3 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 24 Purchases of property, plant and equipment 4 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -169730000 -169730 false false 2 false true -163004000 -163004 false false No definition available. No authoritative reference available. false 25 Proceeds from disposal of property, plant and equipment 4 us-gaap_ProceedsFromSaleOfOtherPropertyPlantAndEquipment us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 38701000 38701 false false 2 false true 26190000 26190 false false No definition available. No authoritative reference available. false 26 Proceeds from sale of operations 4 us-gaap_ProceedsFromDivestitureOfBusinesses us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 65019000 65019 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 27 Acquisitions, net of cash acquired 4 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -14268000 -14268 false false 2 false true -27937000 -27937 false false No definition available. No authoritative reference available. true 28 Net cash used in investing activities 4 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -80278000 -80278 false false 2 false true -164751000 -164751 false false No definition available. No authoritative reference available. true 29 Cash flows from financing activities: 3 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 30 Proceeds from issuance of long-term debt 4 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1000000000 1000000 false false 2 false true 26812000 26812 false false No definition available. No authoritative reference available. false 31 Principal payments of long-term debt 4 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -340352000 -340352 false false 2 false true -67974000 -67974 false false No definition available. No authoritative reference available. false 32 Principal payment of short-term bridge loan 4 us-gaap_RepaymentsOfShortTermDebt us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -1000000000 -1000000 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 33 Net change in short-term borrowings 4 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -8790000 -8790 false false 2 false true -18130000 -18130 false false No definition available. No authoritative reference available. false 34 Debt issuance costs 4 us-gaap_PaymentsOfDebtIssuanceCosts us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -9855000 -9855 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 35 Settlement of interest rate derivative contract 4 sii_SettlementOfInterestRateDerivativeContracts sii false credit duration monetary Settlement of interest rate derivative contract. false false false false false false false false false 1 false true -33383000 -33383 false false 2 false true 0 0 false false Settlement of interest rate derivative contract. No authoritative reference available. false 36 Payment of common stock dividends 4 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -52598000 -52598 false false 2 false true -44163000 -44163 false false No definition available. No authoritative reference available. false 37 Distributions to noncontrolling joint venture partner 4 us-gaap_PaymentsOfDistributionsToAffiliates us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -64000000 -64000 false false 2 false true -14747000 -14747 false false No definition available. No authoritative reference available. false 38 Purchases of common stock under Repurchase Program 4 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -8647000 -8647 false false No definition available. No authoritative reference available. false 39 Proceeds (payments) related to long-term incentive awards 4 us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -531000 -531 false false 2 false true 1845000 1845 false false No definition available. No authoritative reference available. false 40 Tax impact of share-based compensation 4 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -2406000 -2406 false false 2 false true 7591000 7591 false false No definition available. No authoritative reference available. true 41 Net cash used in financing activities 4 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -511915000 -511915 false false 2 false true -117413000 -117413 false false No definition available. No authoritative reference available. true 42 Effect of exchange rate changes on cash 3 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 2615000 2615 false false 2 false true 2636000 2636 false false No definition available. No authoritative reference available. true 43 Increase (decrease) in cash and cash equivalents 3 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 61676000 61676 false false 2 false true -16764000 -16764 false false No definition available. No authoritative reference available. false 44 Cash and cash equivalents at beginning of period 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 162508000 162508 false false 2 false true 158267000 158267 false false No definition available. No authoritative reference available. false 45 Cash and cash equivalents at end of period 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 224184000 224184 false false 2 false true 141503000 141503 false false No definition available. No authoritative reference available. false 46 Supplemental disclosures of cash flow information: 3 us-gaap_SupplementalCashFlowInformationAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 47 Cash paid for interest 4 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 47526000 47526 false false 2 false true 32378000 32378 false false No definition available. No authoritative reference available. false 48 Cash paid for income taxes 4 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 173603000 173603 false false 2 true true 228659000 228659 false false No definition available. No authoritative reference available. false false 2 44 false Thousands UnKnown UnKnown false true