v3.26.3
Divestitures - Summary of Gain (Loss) on Disposal of OWN Segment and DAS Business Unit and Home business (Parenthetical) (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2026
Jan. 09, 2026
Jan. 31, 2025
OWN Segment and DAS Business Unit [Member] | Discontinued Operations [Member]        
Disposal Group, Including Discontinued Operations [Line Items]        
Adjustment to carrying value related to tax effects   $ 1.0    
Net cash consideration       $ 2,025.4
CCS [Member]        
Disposal Group, Including Discontinued Operations [Line Items]        
Cash consideration reduced $ 1.5 1.5    
Carrying value of net assets sold   0.7    
CCS [Member] | Discontinued Operations [Member]        
Disposal Group, Including Discontinued Operations [Line Items]        
Net cash consideration     $ 10,458.9  
Additional tax expense   $ 165.9