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Quantitative Information about Inputs and Valuation Methodologies Used for Fair Value Measurements Classified in Level 3 (Detail)
 1 Months Ended 12 Months Ended
Jul. 31, 2014
Mar. 31, 2015
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Discount rate 22.50%us-gaap_FairValueInputsDiscountRate  
ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Base Case Scenario    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Probability of occurrence   40.00%abmd_FairValueInputsProbabilityOfOccurrence
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ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Minimum    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Milestone date   2018
Discount rate   8.00%us-gaap_FairValueInputsDiscountRate
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ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Minimum | Various Upside and Downside Scenarios    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Probability of occurrence   5.00%abmd_FairValueInputsProbabilityOfOccurrence
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ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Maximum    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Milestone date   2021
Discount rate   12.00%us-gaap_FairValueInputsDiscountRate
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ECP Entwicklungsgesellschaft mbH | Level 3 | Probability weighted income approach | Contingent Consideration | Maximum | Various Upside and Downside Scenarios    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Probability of occurrence   25.00%abmd_FairValueInputsProbabilityOfOccurrence
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