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CONSOLIDATED BALANCE SHEETS (Parenthetical) - SFr / shares
Mar. 31, 2025
Mar. 31, 2024
Statement of Financial Position [Abstract]    
Shares, par value (in CHF per share) SFr 0.25 SFr 0.25
Issued shares (in shares) 168,994,000 173,106,000
Shares in treasury, at cost (in shares) 20,485,124 19,243,000