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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Common shares, par value (in eur per share) $ 0.01 $ 0.01
Common shares outstanding (in shares) 1,353,910,471 1,350,132,117
Special voting shares outstanding (in shares) 371,328,154 387,951,166
Treasury stock (in shares) 10,489,725 14,268,079