v3.25.4
Intangible Assets and Goodwill - Additional Information (Detail)
$ in Millions
 3 Months Ended 12 Months Ended
Oct. 31, 2025
USD ($)
Oct. 31, 2024
USD ($)
Oct. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Amortization expense           $ 30.1 $ 27.3 $ 44.0
Intangible asset impairment charge           0.0 7.3 0.0
Goodwill impairment charge $ 0.0 $ 0.0 $ 0.0          
Goodwill       $ 573.8   783.6 $ 573.8 553.9
Fair value of goodwill               $ 25.6
Accumulated goodwill impairment charges           $ 686.0    
Maximum [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Weighted average cost of capital discount rate       11.80%   11.00% 11.80% 15.50%
Percentage of fair value of reporting unit exceeding carry value 208.2 234.9 241.5         10
Minimum [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Weighted average cost of capital discount rate       10.60%   9.50% 10.60% 13.00%
Percentage of fair value of reporting unit exceeding carry value 16.8 41 4.2          
Connections [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Goodwill       $ 538.2   $ 748.0 $ 538.2 $ 518.3
All Other [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Goodwill       35.6   $ 35.6 35.6 $ 35.6
Trade Names [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Impairment of definite-lived intangible asset             $ 0.4  
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]             Intangible asset impairment charge  
Trade Names [Member] | Connections [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Impairment of definite-lived intangible asset       0.4        
Trademarks and Trade Names [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Impairment of indefinite-lived intangible assets       $ 0.6 $ 6.3   $ 6.9  
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]             Intangible asset impairment charge  
Impairment charges of indefinite-lived intangible assets remaining of fair value   $ 1.1            
Trademarks and Trade Names [Member] | Connections [Member]                
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                
Impairment of indefinite-lived intangible assets             $ 6.9