License Agreements - InnoCare (Details) - InnoCare - tafasitamab - USD ($) $ in Millions	1 Months Ended
Sep. 30, 2021	Aug. 31, 2021
Upfront payment received under license agreement	$ 35.0
Maximum
Upfront and immediate milestone payment to be received under license agreement		$ 82.5

Represents the upfront and immediate milestone payment received under the license agreement.

No definition available.

Name:	incy_LicenseAgreementUpfrontPaymentAndImmediateMilestonePaymentToBeReceived
Namespace Prefix:	incy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration