v3.25.4
Schedule I - Condensed Financial Information of Registrant Condensed Balance Sheets (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Current assets        
Total current assets $ 235.3 $ 306.9    
Noncurrent assets        
Total assets 1,212.8 1,048.7    
Current liabilities        
Total current liabilities 288.7 241.3    
Noncurrent liabilities        
Total liabilities 874.0 662.8    
Stockholders' equity        
Common stock, $0.01 par value; authorized shares at December 31, 2025 and 2024: 800,000; 197,697 and 201,447 shares issued and outstanding at December 31, 2025 and 2024, respectively 2.0 2.0    
Additional paid-in capital 1,016.4 1,034.0    
Accumulated other comprehensive income 1.2 0.0    
Accumulated deficit (680.8) (650.1)    
Total stockholders' equity 338.8 385.9 $ (92.5) $ (33.1)
Total liabilities and stockholders' equity 1,212.8 1,048.7    
Parent Company [Member]        
Noncurrent assets        
Investment in subsidiaries 338.8 385.9    
Total assets 338.8 385.9    
Stockholders' equity        
Common stock, $0.01 par value; authorized shares at December 31, 2025 and 2024: 800,000; 197,697 and 201,447 shares issued and outstanding at December 31, 2025 and 2024, respectively 2.0 2.0    
Additional paid-in capital 1,016.4 1,034.0    
Accumulated other comprehensive income 1.2      
Accumulated deficit (680.8) (650.1)    
Total stockholders' equity 338.8 385.9    
Total liabilities and stockholders' equity $ 338.8 $ 385.9