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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2025
Accounting Policies [Abstract]  
Schedule of cash and cash equivalents
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the total amounts shown on the consolidated statements of cash flows for the years ended December 31, 2025, 2024 and 2023:

Year Ended December 31,
(dollars in millions)202520242023
Cash and cash equivalents$142.9 $100.5 $311.7 
Restricted cash— — 5.5
Cash, cash equivalents and restricted cash$142.9 $100.5 $317.2 
Schedule of restrictions on cash and cash equivalents
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets to the total amounts shown on the consolidated statements of cash flows for the years ended December 31, 2025, 2024 and 2023:

Year Ended December 31,
(dollars in millions)202520242023
Cash and cash equivalents$142.9 $100.5 $311.7 
Restricted cash— — 5.5
Cash, cash equivalents and restricted cash$142.9 $100.5 $317.2