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Commitments and contingencies - Contingencies (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($)
US Department of Justice |
Contingencies |
Settlement amount | $ 12.6

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- Definition Amount awarded to other party in judgment or settlement of litigation. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_LitigationCaseAxis=incy_UsDepartmentOfJusticeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |