Quarterly report [Sections 13 or 15(d)]

Long-Term Debt - Senior Secured Notes due 2029 - Additional Information (Detail)

v3.25.2
Long-Term Debt - Senior Secured Notes due 2029 - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 15, 2026
Apr. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Debt Instrument [Line Items]              
Senior Secured Note, Discount Amount   $ 35.5          
Interest expense     $ 55.4 $ 60.4 $ 110.0 $ 102.0  
Outstanding principal amount     2,206.5   2,206.5    
12.250 Senior Secured Notes due 2029 [Member]              
Debt Instrument [Line Items]              
Aggregate principal amount of senior notes issued   $ 800.0          
Debt instrument interest rate   12.25%          
Debt instrument maturity date   Apr. 15, 2029          
Senior Secured Note, Discount Percentage   2.702%          
Senior Secured Note, Discount Amount   $ 21.6          
Deferred financing costs   $ 13.9          
Non-cash interest expense     0.9 0.7 1.7 0.7  
Amortization of deferred financing costs     0.6 0.4 1.1 0.4  
Unamortized debt discount and debt issuance costs     29.0   29.0   $ 31.8
Senior secured notes, carrying amount     771.0   771.0   768.2
Fair value of notes     877.2   877.2   851.3
Interest expense     25.9 $ 22.6 51.8 $ 22.6  
Outstanding principal amount     $ 800.0   $ 800.0   $ 800.0
12.250 Senior Secured Notes due 2029 [Member] | Forecast [Member]              
Debt Instrument [Line Items]              
Senior notes, redemption price, percentage 100.00%            
Senior notes, redemption price percentage with equity offerings 112.25%            
12.250 Senior Secured Notes due 2029 [Member] | Forecast [Member] | Maximum [Member]              
Debt Instrument [Line Items]              
Percentage of aggregate principal amount of senior notes being redeemed 40.00%