XML 52 R39.htm IDEA: XBRL DOCUMENT
v3.19.1

Summary of significant accounting policies - Narrative 1 (Details) | 3 Months Ended
--- | ---
Mar. 31, 2019 item issuer instrument
Concentrations of Credit Risk |
Number of issuer to which company limits the amount of credit exposure other than US Government guaranteed securities | issuer | 1
Number of financial investment to which company limits the amount of credit exposure other than US Government guaranteed securities | instrument | 1
Variable Interest Entities |
Number of entities in which variable interest held | item | 0
JAKAFI |
Inventory |
Shelf life for finished goods inventory, maximum | 36 months
ICLUSIG |
Inventory |
Shelf life for finished goods inventory, maximum | 24 months

X
- References No definition available. + Details
Name: | incy_ConcentrationOfCreditRiskAbstract
Namespace Prefix: | incy_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of financial investment to which entity limits the amount of credit exposure other than US Government guaranteed securities. + References No definition available. + Details
Name: | incy_CreditExposureLimitationNumberOfFinancialInvestmentOtherThanUnitedStatesGovernmentGuaranteedSecurities
Namespace Prefix: | incy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of issuer to which entity limits the amount of credit exposure other than US Government guaranteed securities. + References No definition available. + Details
Name: | incy_CreditExposureLimitationNumberOfIssuerOtherThanUnitedStatesGovernmentGuaranteedSecurities
Namespace Prefix: | incy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the maximum useful life of merchandise or goods held by the entity that are readily available for sale. + References No definition available. + Details
Name: | incy_InventoryFinishedGoodsUsefulLifeMaximum
Namespace Prefix: | incy_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition n/a + References No definition available. + Details
Name: | incy_VariableInterestEntitiesAbstract
Namespace Prefix: | incy_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of Variable Interest Entities as on date. + References No definition available. + Details
Name: | incy_VariableInterestEntitiesNumber
Namespace Prefix: | incy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | srt_ProductOrServiceAxis=incy_JAKAFIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=incy_ICLUSIGMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |