Quarterly report [Sections 13 or 15(d)]

Long-Term Debt - Schedule of Long-Term Debt (Detail)

v3.25.1
Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Other $ 2.6 $ 2.9
Total 2,193.7 2,260.1
Less: current portion 218.7 283.5
Long-term portion 1,975.0 1,976.6
Senior Secured Credit Facility [Member]    
Debt Instrument [Line Items]    
Borrowings under senior secured credit facility, carrying value 356.5 359.9
12.250% Senior Secured Notes Due 2029 [Member]    
Debt Instrument [Line Items]    
Senior secured notes, carrying value 769.6 768.2
4.250% Convertible Senior Notes Due 2028 [Member]    
Debt Instrument [Line Items]    
Convertible senior notes, carrying value 272.3 271.9
7.875% Senior Notes Due 2025 [Member]    
Debt Instrument [Line Items]    
Senior notes, carrying value 197.1 261.8
4.875% Senior Notes Due 2029 [Member]    
Debt Instrument [Line Items]    
Senior notes, carrying value $ 595.6 $ 595.4