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Acquisition and Strategic Transaction Details - Transaction Expenses $ in Millions | 3 Months Ended
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Mar. 31, 2017 USD ($)
Business Combinations [Abstract] |
Strategic transaction expenses | $ 21.1

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- Definition Strategic transaction expenses + References No definition available. + Details
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Namespace Prefix: | icui_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration