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Restructuring and Impairment Expenses (Tables)
12 Months Ended
Dec. 31, 2024
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserve
The following table presents an analysis of the Company’s restructuring reserve for the years ended December 31, 2024, 2023, and 2022:
(dollars in millions)Severance
Costs
Other Restructuring ExpensesNon-cash
Impairments
Total
Balance at December 31, 2022— — — — 
Charges0.3 2.9 15.6 18.8 
Non-cash and other adjustments— — (15.6)(15.6)
Balance at December 31, 20230.3 2.9 — 3.2 
Charges12.1 0.8 4.7 17.6 
Cash payments(3.5)(2.2)— (5.7)
Non-cash and other adjustments— — (4.7)(4.7)
Balance at December 31, 20248.9 1.5 — 10.4