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Acquisitions (Narrative) (Details)
In Millions, unless otherwise specified
12 Months Ended 0 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2014
USD ($)
Reporting_Unit
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Reporting_Unit
Dec. 11, 2014
Nobel Biocare
USD ($)
Dec. 11, 2014
Nobel Biocare
CHF
Dec. 31, 2013
Nobel Biocare
USD ($)
Dec. 31, 2014
Nobel Biocare
USD ($)
Dec. 31, 2013
Nobel Biocare
USD ($)
Dec. 31, 2013
Nobel Biocare
EUR (€)
Dec. 11, 2014
Nobel Biocare
Dec. 31, 2014
Others
USD ($)
Business
Dec. 31, 2013
Others
USD ($)
Business
Dec. 31, 2012
Others
USD ($)
Business
Business Acquisition [Line Items]                          
Percentage of voting interests acquired                   97.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
     
Cash paid for acquisitions $ 3,130.9us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 957.2us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 1,796.8us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 1,900.0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
1,900.0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
          $ 1,300.0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
$ 957.0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
$ 1,800.0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
Revenue reported by acquired entity for last annual period           780us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
    567us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
  420us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
300us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
666us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
Number of businesses acquired                     16us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
14us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
14us-gaap_NumberOfBusinessesAcquired
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
Goodwill 1,643.6us-gaap_GoodwillAcquiredDuringPeriod 584.7us-gaap_GoodwillAcquiredDuringPeriod 1,015.7us-gaap_GoodwillAcquiredDuringPeriod 1,000.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
    1,013.6us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
      630.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
585.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
1,000.0us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember
Number of segments 5us-gaap_NumberOfReportableSegments   5us-gaap_NumberOfReportableSegments                    
Transaction costs             12us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
12us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
         
Impact of pre-tax charges reflected in earnings             5dhr_Impactofpretaxchargesreflectedinearnings1
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
           
Fair value adjustments to inventory               $ 27dhr_FairValueAdjustmentsToInventory
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember