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Debt (Tables)
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Summary of the Revolving Credit Facility
Our new borrowings under our revolving credit facility and discretionary principal payments on our revolving credit facility in 2024, 2023 and 2022, were as follows:
(Dollars in millions)202420232022
New borrowings$ $— $100.0 
Discretionary principal payments30.0 185.0 75.0