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Employee Stock Plans - Additional Information (Detail)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 27, 2020
USD ($)
$ / shares
shares
Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted stock units | shares 100,000
Weighted average fair value, granted | $ / shares $ 24.0
Stock-based compensation cost, net of estimated forfeitures, recognized $ 13.1
Outstanding restricted stock | shares 1,800,000
Aggregate fair value $ 27.2
Weighted average remaining contractual term (in years) 1 year
Restricted Stock Units [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares vesting period, years 1 year 7 months 6 days
Restricted Stock Units [Member] | Employees [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares vesting period, years 3 years
Unit purchase price of Restricted Stock Units $ 0.0
Performance Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based compensation cost, net of estimated forfeitures, recognized $ 13.1
Outstanding restricted stock | shares 1,800,000
Aggregate fair value $ 27.2
Weighted average remaining contractual term (in years) 1 year
Performance Stock Units [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares vesting period, years 1 year 7 months 6 days
Restricted Stock Awards [Member] | Non-Employee Directors [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding restricted stock | shares 100,000
Unamortized expense of company's unvested restricted stock awards $ 0.2