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License Agreements - Syndax (Details) $ / shares in Units, $ in Millions	1 Months Ended
	Sep. 30, 2021 USD ($) $ / shares shares
Investment in Syndax
Purchase of common stock under Stock Purchase Agreement (in shares ) | shares	1,421,523
Equity Method Investment, Aggregate Cost	$ 35.0
Per share price | $ / shares	$ 24.62
Lock-up period	6 months
Syndax
Upfront payment under license agreement	$ 117.0
Syndax | Development and Regulatory Milestones | Maximum
Additional milestone payments under the license agreement	220.0
Syndax | Sales and Commercial Milestones | Maximum
Additional milestone payments under the license agreement	$ 230.0
Syndax | Syndax | U.S.
Funding of future development costs (as a percent)	45.00%
Syndax | Incyte | U.S.
Funding of future development costs (as a percent)	55.00%

X

- Definition

Represents the additional milestone payments to be made under the license agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	incy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Represents the percentage of future global development costs funded under the license agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of the upfront payment made under the license agreement.

+ References

No definition available.

+ Details

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X

- Definition

Represents the purchase of common stock under Stock Purchase Agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the period of time that the company will not sell or otherwise transfer any of the equity method shares.

+ References

No definition available.

+ Details

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- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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- Details

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- Details

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