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Balance Sheet Items (Tables)
 6 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Restricted Cash Our restricted cash balance as of June 30, 2024 and December 31, 2023 was as follows:
(Dollars in millions)June 30, 2024December 31, 2023
Restricted Cash$2.2 $2.2 
Schedule of Accounts Receivable
The “Accounts receivable, less allowance for credit losses” line item in the condensed consolidated statements of financial position consisted of the following:
(Dollars in millions)June 30, 2024December 31, 2023
Accounts Receivable - Trade$145.8 $143.2 
Accounts Receivable - Other14.218.7
Total$160.0 $161.9 
Schedule of Accounts Payable
The “Accounts payable” line item in the condensed consolidated statements of financial position consisted of the following:
(Dollars in millions)June 30, 2024December 31, 2023
Accounts Payable - Trade$46.7 $46.3 
Accounts Payable - Other3.24.0
Total$49.9 $50.3