FINANCIAL INCOME AND EXPENSES (Tables)

12 Months Ended

Dec. 31, 2025

Financial Income And Expenses [Abstract]

Disclosure of finance cost and finance income


						Year ended 31 December
CHF in millions						2025						2024						2023
Finance income:
Interest income						3.5						8.1						3.0
Dividend income						—						—						—
Realised and unrealised gains on derivative instruments						—						249.6						—
Foreign currency transaction gains						420.2						—						568.6
Gains due to changes in fair values of certain investments and debt, net						—						—						3.1
Other financial income						2.1						—						—
Total						425.8						257.7						574.7
Finance expenses:
Interest expense						(313.3)						(432.9)						(431.1)
Realised and unrealised losses on derivative instruments						(290.1)						—						(524.5)
Foreign currency transaction losses						—						(295.2)						—
Losses on debt modification and extinguishment						(29.2)						(4.0)						(0.1)
Losses due to changes in fair values of certain investments and debt, net						(21.0)						(6.1)						—
Other financial expense						(2.7)						(4.4)						(1.5)
Total						(656.3)						(742.6)						(957.2)