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Credit Facilities and Lease Obligations - Other Lease Related Expenses (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Financial Instruments [Abstract]      
Interest expense on lease obligations $ 6.6 $ 6.1 $ 6.6
Variable lease payments not included in the measurement of lease obligations 0.9 0.8 0.7
Expenses relating to short-term leases or low-value leases $ 1.5 $ 3.7 $ 4.6