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Changes in Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Changes in Other Comprehensive Income [Abstract]      
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax $ (38)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (16)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (26)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges and Treasury Locks, Effect Net of Tax 219bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax 141bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax 34bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax (37)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (19)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax 41us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Accumulated Other Comprehensive Income (Loss), Net of Tax 144us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 106us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax (33)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease) (22)us-gaap_CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease 10us-gaap_CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease  
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Before Reclassifications, Net of Tax 145bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeReclassificationsNetOfTax 130bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeReclassificationsNetOfTax  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax (10)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax 31us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax  
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax (8)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax (9)us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax (18)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax 22us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax (9)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 113us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax 171us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax  
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Reclassified from OCI, Net of Tax (67)bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodReclassifiedFromOciNetOfTax (23)bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodReclassifiedFromOciNetOfTax  
Other Comprehensive Income (Loss), Reclassifications out of OCI, Net of Tax (75)bsx_OtherComprehensiveIncomeLossReclassificationsOutOfOciNetOfTax (32)bsx_OtherComprehensiveIncomeLossReclassificationsOutOfOciNetOfTax  
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (22)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax 10us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax 32us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax 78us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax 107us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax 82us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax   107us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax  
Other comprehensive income for defined benefits and pension items, before reclassification, tax impact 5bsx_Othercomprehensiveincomefordefinedbenefitsandpensionitemsbeforereclassificationtaximpact (15)bsx_Othercomprehensiveincomefordefinedbenefitsandpensionitemsbeforereclassificationtaximpact  
Other Comprehensive Income (Loss), Net of Tax 38us-gaap_OtherComprehensiveIncomeLossNetOfTax 139us-gaap_OtherComprehensiveIncomeLossNetOfTax 105us-gaap_OtherComprehensiveIncomeLossNetOfTax
Other Comprehensive Income (Loss), Tax (83)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax (77)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax  
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising Reclassed from OCI, Tax 38us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax 14us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax  
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized (Gain) Loss Arising During Period, Tax $ 5bsx_OtherComprehensiveIncomeLossfordefinedbenefitandpensionitemsreclassifiedoutofOCItaximpact $ 6bsx_OtherComprehensiveIncomeLossfordefinedbenefitandpensionitemsreclassifiedoutofOCItaximpact