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Equity Security Investments Using the Measurement Alternative Method (Tables)
 9 Months Ended
Sep. 27, 2024
Investments, Debt and Equity Securities [Abstract]  
Summary of Equity Security Investments The Company records these investments as Other long-term assets in the Condensed Consolidated Balance Sheets and are summarized as follows ($ in millions):
September 27, 2024December 31, 2023
Equity security investments$27.6 $28.6 
Net unrealized gains (losses) are summarized as follows ($ in millions):
Three Months EndedNine Months Ended
September 27, 2024September 29, 2023September 27, 2024September 29, 2023
Investment loss
    Unrealized loss$— $(3.3)$(1.5)$(3.3)
Total$— $(3.3)$(1.5)$(3.3)