XML 116 R10.htm IDEA: XBRL DOCUMENT v2.4.1.9
Consolidated Statements of Stockholders' Equity (USD $)
In Millions
Total
Bachman [Member]
Chemsil [Member]
Common Stock [Member]
Additional Paid-In Capital [Member]
Additional Paid-In Capital [Member]
Bachman [Member]
Additional Paid-In Capital [Member]
Chemsil [Member]
Treasury Stock [Member]
Treasury Stock [Member]
Bachman [Member]
Treasury Stock [Member]
Chemsil [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2011 $ 343.1us-gaap_StockholdersEquity     $ 0.3us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 291.5us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    $ (88.1)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    $ 233.9us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ (94.5)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Beginning balance before adjustments 343.1iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes     0.3iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
291.5iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    (88.1)iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    241.5iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(102.1)iosp_StockholdersEquityBeforeAdjustmentForIncomeAndDeferredTaxes
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Adjustment for income taxes (1) [1] 0iosp_AdjustmentOfPriorYearIncomeTaxesOfAccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustment                   (2.7)iosp_AdjustmentOfPriorYearIncomeTaxesOfAccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustment
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
2.7iosp_AdjustmentOfPriorYearIncomeTaxesOfAccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustment
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Adjustment for deferred taxes (2) [2] 0iosp_AdjustmentOfPriorYearDeferredTaxesOfAccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlans                   (4.9)iosp_AdjustmentOfPriorYearDeferredTaxesOfAccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlans
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
4.9iosp_AdjustmentOfPriorYearDeferredTaxesOfAccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlans
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Net income 66.9us-gaap_NetIncomeLoss                   66.9us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Dividend paid (46.7)us-gaap_Dividends                   (46.7)us-gaap_Dividends
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Changes in cumulative translation adjustment 7.2us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax                     7.2us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Changes in unrealized gains/(losses) on derivative instruments, net of tax (0.1)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax                     (0.1)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Treasury stock re-issued 1.0us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised       (3.5)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    4.5us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Treasury stock repurchased (1.4)us-gaap_TreasuryStockValueAcquiredCostMethod             (1.4)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Stock option compensation 2.1us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue       2.1us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Fair value of Strata acquisition-related contingently issuable shares 2.0iosp_AdjustmentsToAdditionalPaidInCapitalAcquisitionRelatedContingentlyIssuableShares       2.0iosp_AdjustmentsToAdditionalPaidInCapitalAcquisitionRelatedContingentlyIssuableShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Amortization of prior service credit, net of tax (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax                     (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Amortization of actuarial net losses, net of tax 2.4us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax                     2.4us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Actuarial net (losses) gains arising during the year, net of tax (58.5)us-gaap_DefinedBenefitPlanActuarialGainLoss                     (58.5)us-gaap_DefinedBenefitPlanActuarialGainLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2012 317.0us-gaap_StockholdersEquity     0.3us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
292.1us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    (85.0)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    254.1us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(144.5)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Net income 77.8us-gaap_NetIncomeLoss                   77.8us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Dividend paid (12.0)us-gaap_Dividends                   (12.0)us-gaap_Dividends
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Changes in cumulative translation adjustment 1.2us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax                     1.2us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Changes in unrealized gains/(losses) on derivative instruments, net of tax (0.1)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax                     (0.1)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Treasury stock re-issued 4.6us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised       (4.2)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    8.8us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Treasury stock repurchased (3.7)us-gaap_TreasuryStockValueAcquiredCostMethod             (3.7)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Excess tax benefit from stock based payment arrangements 3.8us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet       3.8us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Stock option compensation 2.5us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue       2.5us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Fair value of acquisition-related consideration   15.0us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_BachmanGroupCompaniesAcquisitionMember
6.2us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_ChemsilMember
    10.5us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_BachmanGroupCompaniesAcquisitionMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
4.1us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_ChemsilMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  4.5us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_BachmanGroupCompaniesAcquisitionMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
2.1us-gaap_StockIssuedDuringPeriodValueAcquisitions
/ us-gaap_BusinessAcquisitionAxis
= iosp_ChemsilMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
   
Amortization of prior service credit, net of tax (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax                     (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Amortization of actuarial net losses, net of tax 4.8us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax                     4.8us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Actuarial net (losses) gains arising during the year, net of tax (6.7)us-gaap_DefinedBenefitPlanActuarialGainLoss                     (6.7)us-gaap_DefinedBenefitPlanActuarialGainLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2013 409.4us-gaap_StockholdersEquity     0.3us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
308.8us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    (73.3)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    319.9us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
(146.3)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Net income 84.1us-gaap_NetIncomeLoss                   84.1us-gaap_NetIncomeLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Dividend paid (13.4)us-gaap_Dividends                   (13.4)us-gaap_Dividends
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Changes in cumulative translation adjustment (18.0)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax                     (18.0)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Changes in unrealized gains/(losses) on derivative instruments, net of tax 0us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax                      
Treasury stock re-issued 0.5us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised       (1.0)us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    1.5us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Treasury stock repurchased (6.9)us-gaap_TreasuryStockValueAcquiredCostMethod             (6.9)us-gaap_TreasuryStockValueAcquiredCostMethod
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
       
Excess tax benefit from stock based payment arrangements 0.4us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet       0.4us-gaap_AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Stock option compensation 2.6us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue       2.6us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
             
Fair value of contingent consideration (0.8)iosp_FairValueOfContingentConsiderationInRelationToAcquisition       (2.0)iosp_FairValueOfContingentConsiderationInRelationToAcquisition
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
          1.2iosp_FairValueOfContingentConsiderationInRelationToAcquisition
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Amortization of prior service credit, net of tax (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax                     (1.0)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Amortization of actuarial net losses, net of tax 4.3us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax                     4.3us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Actuarial net (losses) gains arising during the year, net of tax 54.7us-gaap_DefinedBenefitPlanActuarialGainLoss                     54.7us-gaap_DefinedBenefitPlanActuarialGainLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Ending Balance at Dec. 31, 2014 $ 515.9us-gaap_StockholdersEquity     $ 0.3us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 308.8us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    $ (78.7)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
    $ 391.8us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ (106.3)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
[1] Adjustment to account for the income taxes on historical foreign exchange gains and losses on intercompany loans into cumulative translation adjustment.
[2] Adjustment to reverse the impact on deferred taxes of a change in the associated tax rate on the unrecognized actuarial net losses in 2010 and 2011.