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v3.19.2

Fair Value Measurement Fair Value Measurement (Details) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2019 USD ($)
Fair Value Disclosures [Abstract] |
contingent consideration gross | $ 225.0

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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