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Provisions (Tables)
12 Months Ended
Dec. 31, 2022
Provisions [abstract]  
Schedule of Provisions
(CHF in millions)Social chargesLong-service leaveAsset retirement obligationTotal
Balance at January 1, 202120.1 0.9  21.0 
thereof current— 0.4 — 0.4 
thereof non-current20.1 0.6 — 20.6 
Additions15.6 1.1 3.7 20.4 
Release— (0.4)— (0.4)
Utilization(21.6)— — (21.6)
Balance at December 31, 202114.0 1.7 3.6 19.3 
thereof current14.0 0.7 0.1 14.9 
thereof non-current— 0.9 3.5 4.4 
Additions1.4 2.7 0.3 4.4 
Release(6.8)(0.5)— (7.3)
Utilization(4.4)— — (4.4)
Unwinding of discount— — 0.1 0.1 
Exchange differences0.1 (0.1)(0.1)(0.1)
Balance at December 31, 20224.3 3.8 4.0 12.1 
thereof current4.3 0.5 0.2 5.0 
thereof non-current— 3.3 3.8 7.2