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Related Party Transactions (Details) - Company's directors and executive team [member] - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of transactions between related parties [line items]    
Short-term employee benefits $ 8.4 $ 7.0
Share-based payments 3.5 4.6
Amounts payable, related party transactions $ 11.9 $ 11.6