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Summary of Accounting Policies - Other Accrued Liabilities (Detail) - USD ($)
$ in Millions
Dec. 28, 2019
Dec. 30, 2018
Dec. 29, 2018
Accounting Policies [Abstract]      
Income taxes $ 23.9   $ 34.4
Accrued warranty 17.3   17.1
Operating lease liability 19.5 $ 20.2  
Deferred subscription revenue 55.1   47.3
Accrued new tool return 50.9   43.7
Accrued property, payroll and other taxes 38.6   40.1
Accrued selling and promotion expense 28.3   28.7
Accrued legal charges 0.0   30.9
Other 137.2   131.4
Total other accrued liabilities $ 370.8   $ 373.6