Foreign currency risk - Schedule of Foreign Exchange Rates (Details)	12 Months Ended
Dec. 31, 2022 $ / SFr	Dec. 31, 2021 $ / SFr
AUD 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.63	0.66
Average foreign exchange rate	0.67	0.70
BRL 100
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	17.68	16.36
Average foreign exchange rate	18.49	17.23
CAD 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.68	0.72
Average foreign exchange rate	0.74	0.73
CNY 100
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	13.26	14.33
Average foreign exchange rate	14.46	14.23
EUR 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.99	1.04
Average foreign exchange rate	1.02	1.10
GBP 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	1.11	1.23
Average foreign exchange rate	1.20	1.27
JPY 100
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.70	0.79
Average foreign exchange rate	0.75	0.85
HKD 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.12	0.12
Average foreign exchange rate	0.13	0.12
USD 1
Disclosure of nature and extent of risks arising from financial instruments [line items]
Closing foreign exchange rate	0.93	0.91
Average foreign exchange rate	0.96	0.92

The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

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- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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