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Acquisitions (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended
Apr. 03, 2015
Businesses
Mar. 28, 2014
Dec. 31, 2014
Dec. 31, 2014
Business Combinations [Abstract]        
Businesses acquired 3us-gaap_NumberOfBusinessesAcquired      
Cash paid for acquisitions $ 487.6us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired $ 162.8us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired    
Aggregate annual sales of additional businesses     245us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod  
Goodwill 183.3us-gaap_GoodwillAcquiredDuringPeriod      
Nobel Biocare | Fair value adjustments to inventory        
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]        
Fair value adjustments to inventory       $ 27dhr_FairValueAdjustmentsToInventory
/ us-gaap_BusinessAcquisitionAxis
= dhr_NobelBiocareMember
/ us-gaap_NonrecurringAdjustmentAxis
= us-gaap_FairValueAdjustmentToInventoryMember