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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - SFr / shares
shares in Thousands
Jun. 30, 2020
Mar. 31, 2020
Statement of Financial Position [Abstract]    
Shares, par value (in CHF per share) SFr 0.25 SFr 0.25
Shares issued (in shares) 173,106 173,106
Shares that may be issued out of conditional capital (in shares) 50,000 50,000
Shares that may be issued out of the authorized capital (in shares) 34,621 34,621
Treasury, at cost, shares (in shares) 4,689 6,210