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Pension Plans - Narrative (Detail)
$ in Millions
6 Months Ended
Jun. 29, 2019
USD ($)
Foreign Pension Plans  
Defined Benefit Plan Disclosure [Line Items]  
Expected future employer contributions $ 9.4
United States  
Defined Benefit Plan Disclosure [Line Items]  
Expected future employer contributions 2.0
Cash contributions made 25.8
Discretionary contribution 25.0
Required contribution $ 0.8