v3.25.4
INCOME TAXES - Deferred Tax Assets And Liabilities By Origin Of The Temporary Difference (Details) - CHF (SFr)
SFr in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets SFr 94.5 SFr 57.8
Deferred tax liabilities 194.5 199.9
Netting of deferred tax assets 79.2 34.2
Netting of deferred tax liabilities (79.2) (34.1)
Reflected in the consolidated statements of financial position as follows:    
Deferred tax assets 15.3 23.6
Deferred tax liabilities 115.4 165.8
Intangible assets    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities 74.2 135.2
Property, plant and equipment    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities 23.5 34.2
Unrealised foreign exchange results    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 5.8 26.5
Deferred tax liabilities 77.0  
Derivatives    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 86.4  
Deferred tax liabilities 0.1 4.8
Receivables    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities 2.2 3.9
Right-of-use assets    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets   20.4
Deferred revenue    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 0.1 0.1
Deferred tax liabilities 16.8 20.1
Employee benefit obligations    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 0.2 1.4
Provisions    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 1.9 8.9
Deferred tax liabilities 0.3 0.3
Lease liabilities    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities   1.0
Other    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 0.1 0.1
Deferred tax liabilities SFr 0.4 0.4
Tax net operating loss carry forward    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets   SFr 0.4