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Changes in Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Changes in Other Comprehensive Income [Abstract]        
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax $ (73)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (22)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (38)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax $ (16)us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax 247bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax 114bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax 219bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax 141bsx_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesAndTreasuryLocksEffectNetOfTax
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax (32)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (20)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (37)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax (19)us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Accumulated Other Comprehensive Income (Loss), Net of Tax 142us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 72us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 144us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 106us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease) (35)us-gaap_CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease (6)us-gaap_CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Before Reclassifications, Net of Tax 59bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeReclassificationsNetOfTax (14)bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeReclassificationsNetOfTax    
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax (3)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax (1)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax    
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax 21us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax (21)us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Reclassified from OCI, Net of Tax (31)bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodReclassifiedFromOciNetOfTax (13)bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingDuringPeriodReclassifiedFromOciNetOfTax    
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax 8us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax      
Other Comprehensive Income (Loss), Reclassifications out of OCI, Net of Tax (23)bsx_OtherComprehensiveIncomeLossReclassificationsOutOfOciNetOfTax (13)bsx_OtherComprehensiveIncomeLossReclassificationsOutOfOciNetOfTax    
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax (35)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax (6)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax 28us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax (27)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax    
Net change in certain retirement plans 5us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax (1)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax    
Other Comprehensive Income (Loss), Net of Tax (2)us-gaap_OtherComprehensiveIncomeLossNetOfTax (34)us-gaap_OtherComprehensiveIncomeLossNetOfTax    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax 34us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax (7)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax    
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising Reclassed from OCI, Tax $ 18bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingReclassedFromOciTax $ 8bsx_OtherComprehensiveIncomeLossUnrealizedGainLossOnDerivativesArisingReclassedFromOciTax