v3.26.1
Intangible assets (Tables)
 6 Months Ended
Jun. 30, 2026
Intangible assets and goodwill [abstract]  
Schedule of Intangible Assets
(CHF in millions)Patents, licenses and other rightsSoftwareGoodwillTotal
Cost at January 1, 202571.8 32.1 1.8 105.7 
Accumulated Depreciation at January 1, 2025(24.3)(23.1)— (47.4)
Net book value at January 1, 202547.5 9.0 1.8 58.3 
Six month period ended June 30, 2025
Opening net book value47.5 9.0 1.8 58.3 
Additions1.0 1.2 — 2.2 
Depreciation(2.5)(2.6)— (5.1)
Net book value at June 30, 202546.0 7.5 1.8 55.3 
Cost at June 30, 202572.8 33.2 1.8 107.8 
Accumulated Depreciation at June 30, 2025(26.8)(25.7)— (52.5)
Net book value at June 30, 202546.0 7.5 1.8 55.3 
Cost at January 1, 202674.5 35.0 1.8 111.3 
Accumulated Depreciation at January 1, 2026(29.4)(27.7)— (57.1)
Net book value at January 1, 202645.1 7.3 1.8 54.2 
Six month period ended June 30, 2026
Opening net book value45.1 7.3 1.8 54.2 
Additions1.8 3.5 — 5.3 
Depreciation(2.7)(1.9)— (4.7)
Currency Translation0.7 0.1 — 0.9 
Net book value at June 30, 202644.9 9.0 1.8 55.8 
Cost at June 30, 202677.5 39.2 1.8 118.4 
Accumulated Depreciation at June 30, 2026(32.5)(30.1)— (62.6)
Net book value at June 30, 202644.9 9.0 1.8 55.8