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Business Combinations (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jan. 31, 2025
Dec. 05, 2024
Aug. 05, 2024
Aug. 01, 2024
Mar. 19, 2021
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Business Combination [Line Items]                      
Income (loss) from equity method investment           $ (0.2)   $ (5.3) $ 10.3 $ (23.9)  
Goodwill           258.3     258.3   $ 235.4
Linksys                      
Business Combination [Line Items]                      
Cash investment in privately held company         $ 160.0            
Ownership interest percentage         50.80%            
Fair value of equity method investment $ 21.5                    
Income (loss) from equity method investment 10.8                    
Deferred tax asset previously recorded related to equity method investment 30.6                    
Linksys                      
Business Combination [Line Items]                      
Cash consideration $ 20.8                    
Percentage of voting interests acquired 100.00%                    
Business combination, consideration transferred $ 42.3                    
Intangible assets acquired 17.5                    
Other net assets acquired 64.7                    
Deferred tax assets 45.8                    
Inventory 21.4                    
Cash 8.8                    
Net other assets and liabilities 11.3                    
Gain on bargain purchase $ 39.9                    
Other acquisitions                      
Business Combination [Line Items]                      
Cash consideration             $ 38.3        
Goodwill           21.9     21.9    
Goodwill expected to be tax deductible           8.6     8.6    
Goodwill not expected to be tax deductible           $ 13.3     $ 13.3    
Next DLP                      
Business Combination [Line Items]                      
Cash consideration     $ 105.0                
Goodwill     82.6                
Liabilities assumed     1.6                
Next DLP | Developed technologies                      
Business Combination [Line Items]                      
Intangible assets acquired     13.5                
Next DLP | Customer relationships                      
Business Combination [Line Items]                      
Intangible assets acquired     $ 10.5                
Lacework                      
Business Combination [Line Items]                      
Cash consideration       $ 152.3              
Intangible assets acquired       61.3              
Deferred tax assets       244.4              
Cash       6.2              
Net other assets and liabilities       53.3              
Gain on bargain purchase       106.3              
Lacework | Developed technologies                      
Business Combination [Line Items]                      
Finite-lived intangible assets acquired       39.5              
Lacework | Customer relationships                      
Business Combination [Line Items]                      
Finite-lived intangible assets acquired       7.5              
Lacework | Backlog                      
Business Combination [Line Items]                      
Finite-lived intangible assets acquired       10.0              
Lacework | Trade names                      
Business Combination [Line Items]                      
Finite-lived intangible assets acquired       $ 4.3              
Perception Point Ltd.                      
Business Combination [Line Items]                      
Cash consideration   $ 33.7                  
Goodwill   24.5                  
Other net liabilities   6.8                  
Perception Point Ltd. | Developed technologies                      
Business Combination [Line Items]                      
Intangible assets acquired   9.5                  
Perception Point Ltd. | Customer relationships                      
Business Combination [Line Items]                      
Intangible assets acquired   $ 6.5