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Contingencies and commitments (Narrative) (Details) | Feb. 21, 2023 patent | Feb. 20, 2023 patent | May 31, 2021 numberOfNotices
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Domestic Tax Authority |  |  |
Loss Contingencies [Line Items] |  |  |
Number of notices on proposed additional tax | numberOfNotices |  |  | 2
Janseen Biotech, Inc Patent Litigation | Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Number of patents allegedly infringed upon | patent | 4 | 2 |

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- Definition Number of another entity's patents that the entity has allegedly infringed. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349 + Details
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