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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - SFr / shares
Jun. 25, 2022
Dec. 25, 2021
Statement of Financial Position [Abstract]    
Common shares, par value (in CHF dollars per share) SFr 0.10 SFr 0.10
Common shares, authorized 198,077,000 198,077,000
Common shares, issued 198,077,000 198,077,000
Common shares, outstanding 193,058,000 192,608,000
Treasury stock shares 5,019,000 5,469,000