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Intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Intangible assets and goodwill [abstract] |
Schedule of Intangible Assets |
(CHF in millions) |  | Patents, licenses and other rights |  | Software |  | Goodwill |  | Total
Cost at January 1, 2021 |  | 51.8 |  |  | 10.8 |  |  | 1.8 |  |  | 64.4 |
Accumulated Amortization at January 1, 2021 |  | (7.0) |  |  | (2.7) |  |  | — |  |  | (9.7) |
Net book amount at January 1, 2021 |  | 44.7 |  |  | 8.2 |  |  | 1.8 |  |  | 54.7 |
Twelve month period ended December 31, 2021 |  |  |  |  |  |  |  |
Opening net book amounts |  | 44.7 |  |  | 8.2 |  |  | 1.8 |  |  | 54.7 |
Additions |  | 1.0 |  |  | 10.6 |  |  | — |  |  | 11.6 |
Amortization |  | (3.9) |  |  | (4.9) |  |  | — |  |  | (8.8) |
Net book value at December 31, 2021 |  | 41.9 |  |  | 13.8 |  |  | 1.8 |  |  | 57.5 |
Cost at December 31, 2021 |  | 52.8 |  |  | 21.4 |  |  | 1.8 |  |  | 76.0 |
Accumulated Amortization at December 31, 2021 |  | (10.9) |  |  | (7.6) |  |  | — |  |  | (18.5) |
Net book amount at December 31, 2021 |  | 41.9 |  |  | 13.8 |  |  | 1.8 |  |  | 57.5 |
Twelve month period ended December 31, 2022 |  |  |  |  |  |  |  |
Opening net book amounts |  | 41.9 |  |  | 13.8 |  |  | 1.8 |  |  | 57.5 |
Additions |  | 16.4 |  |  | 6.3 |  |  | — |  |  | 22.7 |
Disposals |  | — |  |  | (0.5) |  |  | — |  |  | (0.5) |
Amortization |  | (4.1) |  |  | (5.2) |  |  | — |  |  | (9.3) |
Net book value at December 31, 2022 |  | 54.2 |  |  | 14.4 |  |  | 1.8 |  |  | 70.3 |
Cost at December 31, 2022 |  | 69.2 |  |  | 25.9 |  |  | 1.8 |  |  | 96.9 |
Accumulated Amortization at December 31, 2022 |  | (15.0) |  |  | (11.6) |  |  | — |  |  | (26.6) |
Net book amount at December 31, 2022 |  | 54.2 |  |  | 14.4 |  |  | 1.8 |  |  | 70.3 |

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- Definition The disclosure of the reconciliation of changes in intangible assets and goodwill. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2022-03-24 -Paragraph 118 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2022-en-r&anchor=para_118&doctype=Standard -URIDate 2022-03-24 + Details
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