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Contingencies and commitments (Details) | Oct. 12, 2021 patent | Sep. 28, 2021 patent | Oct. 26, 2021 claim
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Otezla ANDA Patent Litigation [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Gain Contingency, Patents Found Infringed upon, Number |  | 3 |
Subsequent Event [Member] | Novartis Pharma AG |  |  |
Loss Contingencies [Line Items] |  |  |
Loss Contingency, Pending Claims, Number | claim |  |  | 2
Subsequent Event [Member] | Otezla ANDA Patent Litigation [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Gain Contingency, Patents Found Infringed upon, Number | 3 |  |

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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=121557415&loc=d3e14435-108349 + Details
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