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SHARE-BASED PAYMENTS - Share-based compensation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Share-based payment transaction    
Share-based compensation expense $ 23.0 $ 17.2
Share option    
Share-based payment transaction    
Share-based compensation expense   0.1
Restricted share plan    
Share-based payment transaction    
Share-based compensation expense 19.0 13.2
DSUs    
Share-based payment transaction    
Share-based compensation expense 1.6 1.4
ESPP    
Share-based payment transaction    
Share-based compensation expense $ 2.4 $ 2.5