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Receivables (Details) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Receivables [Abstract]    
Trade receivables $ 226.0 $ 161.0
Income tax receivable 10.0 2.0
Other receivables 30.0 23.0
Allowance for doubtful accounts (2.0) (2.0)
Total $ 264.0 $ 184.0