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Accounting for Asset Retirement Obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Asset retirement obligation [Roll Forward]    
Asset retirement obligation, beginning of period $ 24.1 $ 23.9
Accretion expense 1.9 2.3
Other 1.2 1.1
Payments (2.3) (3.4)
Foreign currency translation (0.5) 0.2
Asset retirement obligation, end of period 24.4 $ 24.1
Asset retirement obligation [Abstract]    
Asset retirement obligation, current portion 0.7  
Asset retirement obligation, noncurrent portion $ 23.7