v3.25.4
Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Allowance for credit losses [Member]      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 1.6 $ 1.4 $ 1.5
Additions Charged to Costs & Expenses 2.8 0.5 0.3
Deductions (0.5) (0.3) (0.4)
Balance at End of Period 3.9 1.6 1.4
Deferred tax asset valuation allowance [Member]      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 29.3 31.7 28.0
Additions Charged to Other Accounts (5.2) (2.4) 3.7
Balance at End of Period $ 24.1 $ 29.3 $ 31.7