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Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Jan. 01, 2017
Income Tax Contingency [Line Items]
Tax benefits		$ 54.4
Tax benefits, release of valuation allowances with respect to deferred tax assets of certain foreign subsidiaries		28.7
Tax benefits, share-based compensation		15.8
Tax benefits, restructuring charges and various other items		$ 9.9	$ 12.1
Consolidation of affiliate, revaluation gain	$ 30.3		$ 30.3
U.S. federal statutory income tax rate		35.00%	35.00%
Accounting Standards Update 2016-09
Income Tax Contingency [Line Items]
Deferred tax asset recognized				$ 54.5

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Income Tax Expense (Benefit), Discrete Items

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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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 domestic federal statutory tax rate applicable to pretax income (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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