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Contingencies and commitments (Details)	Jul. 19, 2018 patent	Jun. 21, 2018 patent	Mar. 09, 2018 claim	Mar. 02, 2018 claim
Sanofi/Regeneron Patent Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims | claim				2
KANJINTI Patent Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed, number | patent		37
KANJINTI Patent Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss contingency, patents allegedly infringed, number | patent	18
Coherus ENBREL Patent Challenge [Member]
Loss Contingencies [Line Items]
Number of denied petitions | claim			2

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- Definition

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- Definition

Number of another entity's patents that the entity has allegedly infringed.

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- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

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