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CAPITAL AND RESERVES - Public Offering (Details) - $ / shares
Jun. 21, 2018
Dec. 31, 2019
Jun. 20, 2018
Disclosure of classes of share capital [line items]      
Par value per share (in dollars per share)   $ 1.20  
Entity common stock, shares outstanding (in shares)   35,669,330  
Luxembourg      
Disclosure of classes of share capital [line items]      
Par value per share (in dollars per share)     $ 1.20
Sale of stock, price per share (in dollars per share) $ 52.00    
Luxembourg | Ordinary shares      
Disclosure of classes of share capital [line items]      
Number of shares reserved for issue under options and contracts for sale of shares     5,815,259
Number of additional shares authorized (in shares)     872,289
Stock options issued (in shares) 872,289