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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2021
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities
Accrued expenses consisted of the following ($ in millions):
December 31,
20212020
Accrued salaries, wages and employee benefits$42.0 $48.7 
Other accrued expenses67.3 52.2 
Total$109.3 $100.9