The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2025-01-01
-Paragraph 47
-Subparagraph a
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-URIDate 2025-03-27

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The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]]

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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.

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The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

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SHARE-BASED COMPENSATION - Additional Information (Details) - PSUs	1 Months Ended		12 Months Ended
	Sep. 30, 2025 SFr / shares	Apr. 30, 2025 SFr / shares	Dec. 31, 2024 SFr / shares	Dec. 31, 2025 installment shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of vesting installments \| installment				1
Share price volatility	24.28%	23.97%	24.70%
Entry price (in chf per share) \| SFr / shares	SFr 49.14	SFr 42.70	SFr 40.61
Risk-free rate	(0.11%)	1.07%	1.01%
Minimum \| Cumulative Absolute Adjusted Free Cash Flow
Disclosure of terms and conditions of share-based payment arrangement [line items]
Performance condition, shares entitled to				0
Minimum \| Total Shareholder Return
Disclosure of terms and conditions of share-based payment arrangement [line items]
Performance condition, shares entitled to				1.5
Maximum \| Cumulative Absolute Adjusted Free Cash Flow
Disclosure of terms and conditions of share-based payment arrangement [line items]
Performance condition, shares entitled to				1.85
Maximum \| Total Shareholder Return
Disclosure of terms and conditions of share-based payment arrangement [line items]
Performance condition, shares entitled to				0