Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended
Apr. 03, 2020	Mar. 29, 2019	Jan. 03, 2020
Income Tax Contingency [Line Items]
Income tax provision	$ 17.5	$ 12.8
Effective income tax rate	22.00%	17.00%
Other Noncurrent Liabilities [Member]
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 60.4		$ 59.5
Unrecognized tax benefit liabilities include interest and penalties	12.3		$ 11.5
CARES Act [Member]
Income Tax Contingency [Line Items]
Income tax provision	0.0
Deferred Tax Assets, Net	$ 0.0

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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