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Intangible Assets and Goodwill - Additional Information (Detail)
$ in Millions
 3 Months Ended 12 Months Ended
Oct. 31, 2024
USD ($)
Oct. 31, 2023
USD ($)
Oct. 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Segment
Dec. 31, 2024
USD ($)
Sep. 30, 2024
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Amortization expense               $ 27.3 $ 44.0 $ 56.1  
Intangible asset impairment charge               $ 7.3 0.0 1.6  
Impairment of indefinite-lived intangible assets                 $ 0.0    
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]               Intangible asset impairment charge      
Impairment, Intangible Asset, Indefinite-Lived (Excluding Goodwill), Statement of Income or Comprehensive Income [Extensible Enumeration]                 Intangible asset impairment charge    
Impairment charges of long-lived assets remaining of fair value         $ 0.0            
Number of reporting units | Segment       1              
Goodwill impairment charge $ 0.0 $ 0.0 $ 0.0         $ 0.0 $ 0.0 6.3  
Goodwill         573.8     573.8 553.9 545.5  
Fair value of goodwill             $ 3.1   $ 25.6   $ 214.6
Accumulated goodwill impairment charges         $ 686.0     $ 686.0      
Maximum [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Estimated future net cash flows discounted rate             3.00%        
Weighted average cost of capital discount rate         11.80%   15.50% 11.80% 15.50%    
Percentage of fair value of reporting unit exceeding carry value 234.9 241.5 1,809.5           10    
Maximum [Member] | Headroom [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Percentage of fair value of reporting unit exceeding carry value                     5.00%
Minimum [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Estimated future net cash flows discounted rate             0.00%        
Weighted average cost of capital discount rate         10.60%   12.80% 10.60% 13.00%    
Percentage of fair value of reporting unit exceeding carry value 41 4.2 53.2                
Connections [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Goodwill impairment charge             $ 6.0        
Goodwill         $ 538.2     $ 538.2 $ 518.3    
All Other Category [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Goodwill impairment charge             $ 0.3        
Goodwill         35.6     35.6 $ 35.6    
Trade Names [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Impairment of indefinite-lived intangible assets         $ 0.6            
Trade Names [Member] | Connections [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      
Trademarks and Trade Names [Member]                      
Schedule Of Intangible Assets Excluding Goodwill [Line Items]                      
Impairment of indefinite-lived intangible assets       $ 1.6   $ 6.3       1.6  
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   $ 1.6