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Pension and Other Postretirement Benefit Plans - Additional Information (Detail) - Pension - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jul. 01, 2017
Jun. 30, 2018
Jul. 01, 2017
Defined Benefit Plan Disclosure [Line Items]        
Employer's contribution towards defined benefit plan     $ 6.9  
Minimum        
Defined Benefit Plan Disclosure [Line Items]        
Estimated employer's contribution towards defined benefit plan in current year $ 10.0   10.0  
Maximum        
Defined Benefit Plan Disclosure [Line Items]        
Estimated employer's contribution towards defined benefit plan in current year 15.0   15.0  
Foreign        
Defined Benefit Plan Disclosure [Line Items]        
Settlement loss $ 0.0 $ 0.0 $ 0.0 $ 0.8