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Other Operating Charges, net (Tables)
3 Months Ended
Mar. 31, 2023
Other Income and Expenses [Abstract]  
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
Quarter Ended March 31,
20232022
Reorganization and other expenses $— $1.5 
Costs associated with mill closure— 0.4 
Loss on sale or impairment associated with assets1.1 — 
Directors' equity-based compensation expense(0.2)(1.4)
Other0.2 — 
$1.1 $0.5