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Goodwill and Other Intangible Assets - Goodwill by Reportable Segments (Parenthetical) (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Goodwill [Line Items]      
Goodwill $ 3,514.4 [1] $ 4,072.4 $ 5,231.7
Goodwill , gross 5,599.7 5,586.3 5,626.0
CCS [Member]      
Goodwill [Line Items]      
Goodwill 2,140.4 [1] 2,229.4 2,255.8
Goodwill , gross 2,291.0 $ 2,280.9 $ 2,307.3
BDCC [Member]      
Goodwill [Line Items]      
Goodwill , gross 881.5    
N C C C Member      
Goodwill [Line Items]      
Goodwill , gross $ 1,258.9    
[1] As of December 31, 2023, the CCS reportable segment goodwill balance of $2,140.4 million includes goodwill balances of $881.5 million and $1,258.9 million for the Building and Data Center Connectivity (BDCC) and Network Cable and Connectivity reporting units, respectively.