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SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Supplemental Cash Flow Elements [Abstract]    
Cash paid for income taxes $ 0.3 $ 0.3
Establishment of operating lease right-of-use assets and lease liabilities    
Operating lease right-of-use assets 6.0 0.0
Operating lease liabilities 6.0 0.8
Tenant improvement allowance not yet received 2.7 0.0
Purchases of property, plant and equipment in accounts payable and accrued liabilities $ 8.0 $ 0.9