INCOME TAXES - Disclosure of Income Tax Expense (Details) - CHF (SFr) SFr in Millions |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Income Taxes [Abstract] | |||
| Current income tax expense | SFr (18.3) | SFr (20.6) | SFr (17.3) |
| Current income tax benefit (expense) of prior periods | (4.5) | (19.2) | 1.0 |
| Deferred income tax benefit | 42.7 | 56.5 | 76.2 |
| Total income tax benefit | SFr 19.9 | SFr 16.7 | SFr 59.9 |
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Income taxes [Abstract] No definition available.
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