Share-based compensation - ESC (Details) - Equity sharing certificate plan		12 Months Ended
Jun. 01, 2010 shares	Dec. 31, 2022 EquityInstruments SFr / shares	Dec. 31, 2021 EquityInstruments SFr / shares	Dec. 31, 2020 EquityInstruments SFr / shares
Share-based compensation
Number of shares for which right to subscribe is provided \| shares	1,000
Beginning balance		198,750	198,750	198,750
Exercised		(198,750)
Ending balance		0	198,750	198,750
Average subscription price / floor price / deferred strike price at beginning of period \| SFr / shares		SFr 1.54	SFr 1.54	SFr 1.54
Exercised \| SFr / shares		SFr 0.13	0	0
Average subscription price / floor price / deferred strike price at end of period \| SFr / shares			SFr 1.54	SFr 1.54
Exercisable			198,750	171,750

Number of shares for which right to subscribe is given

No definition available.

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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.

+ Details

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- Definition

The number of other equity instruments (ie other than share options) exercisable in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard
-URIDate 2022-03-24

+ Details

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- Definition

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

+ References

+ Details

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- Definition

The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

+ References

+ Details

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- Definition

The weighted average exercise price of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

+ Details

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- Definition

The weighted average exercise price of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. [Refer: Weighted average [member]]

+ References

+ Details

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- Details

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