v3.25.2
Financial Instruments and Fair Value Measurements - Fair Values of Financial Instruments Not Measured at Fair Value in Consolidated Balance Sheets (Details) - Senior Notes - USD ($)
$ in Millions
Jun. 30, 2025
Jun. 27, 2025
Dec. 31, 2024
10.625% senior secured notes due January 15, 2031      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate (in percent) 10.625%    
Long-term debt, carrying value $ 685.9   $ 0.0
6.875% senior secured notes due November 1, 2027      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate (in percent) 6.875%    
Long-term debt, carrying value $ 0.0 $ 4.9 481.6
Fair Value | 10.625% senior secured notes due January 15, 2031      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term debt, fair value 719.9   0.0
Fair Value | 6.875% senior secured notes due November 1, 2027      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Long-term debt, fair value $ 0.0   $ 471.3