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CONSOLIDATED BALANCE SHEETS (Parenthetical) - SFr / shares
Mar. 31, 2022
Mar. 31, 2021
Statement of Financial Position [Abstract]    
Shares, par value (in CHF per share) SFr 0.25 SFr 0.25
Issued shares (in shares) 173,106,000 173,106,000
Shares that may be issued out of conditional capital (in shares) 50,000,000 50,000,000
Shares that may be issued out of authorized capital (in shares) 17,311,000 17,311,000
Treasury shares (in shares) 7,854,600 4,799,000