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v3.19.3.a.u2

Leases (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Leases [Abstract] |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 40.4
subsequenteventleasesminimumpayments | $ 21.8

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- Definition subsequenteventleasesminimumpayments + 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

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- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | duration