v3.24.0.1
Right-of-use assets - Schedule of Right-of-Use Assets (Details) - CHF (SFr)
SFr in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance SFr 151.6 SFr 177.9
Lease modification 2.0 (45.5)
Additions 103.4 43.4
Disposals (0.4) (1.6)
Depreciation (32.9) (23.0)
Currency Translation (9.8) 0.4
Right-of-use assets ending balance 214.0 151.6
Gross carrying amount    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 192.7 200.2
Right-of-use assets ending balance 283.1 192.7
Accumulated depreciation    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance (41.1) (22.3)
Right-of-use assets ending balance (69.1) (41.1)
Storage    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 16.8 72.9
Lease modification (2.1) (52.4)
Additions 66.0 0.0
Disposals (0.1) 0.0
Depreciation (11.8) (7.1)
Currency Translation (3.3) 3.4
Right-of-use assets ending balance 65.3 16.8
Storage | Gross carrying amount    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 28.7 77.9
Right-of-use assets ending balance 87.5 28.7
Storage | Accumulated depreciation    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance (11.9) (5.0)
Right-of-use assets ending balance (22.1) (11.9)
Stores & showrooms    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 37.9 11.9
Lease modification 3.3 1.7
Additions 27.1 31.7
Disposals 0.0 (0.1)
Depreciation (9.2) (5.2)
Currency Translation (4.1) (2.0)
Right-of-use assets ending balance 55.1 37.9
Stores & showrooms | Gross carrying amount    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 45.6 14.8
Right-of-use assets ending balance 70.5 45.6
Stores & showrooms | Accumulated depreciation    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance (7.7) (3.0)
Right-of-use assets ending balance (15.4) (7.7)
Offices    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 94.2 91.9
Lease modification 0.7 5.1
Additions 8.0 8.2
Disposals 0.0 (1.3)
Depreciation (10.0) (9.0)
Currency Translation (2.1) (0.8)
Right-of-use assets ending balance 90.8 94.2
Offices | Gross carrying amount    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 111.0 102.9
Right-of-use assets ending balance 116.9 111.0
Offices | Accumulated depreciation    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance (16.8) (11.0)
Right-of-use assets ending balance (26.1) (16.8)
Cars    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 2.8 1.2
Lease modification 0.0 0.0
Additions 2.3 3.6
Disposals (0.3) (0.2)
Depreciation (1.9) (1.7)
Currency Translation (0.2) (0.1)
Right-of-use assets ending balance 2.8 2.8
Cars | Gross carrying amount    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance 7.4 4.5
Right-of-use assets ending balance 8.1 7.4
Cars | Accumulated depreciation    
Disclosure of quantitative information about right-of-use assets [line items]    
Right-of-use assets beginning balance (4.6) (3.3)
Right-of-use assets ending balance SFr (5.4) SFr (4.6)