v3.7.0.1

Income Taxes (Narrative) (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Apr. 03, 2015	Jun. 30, 2017	Jul. 01, 2016	Dec. 30, 2016
Income Tax Contingency [Line Items]
Effective income tax rate	26.00%	7.00%		25.00%	18.00%
Statutory federal income tax rate				35.00%	35.00%
Unrecognized tax benefits that would impact effective tax rate	$ 66.9			$ 66.9		$ 60.5
Unrecognized tax benefit liabilities include interest and penalties	10.1			10.1		9.3
Tax Year 2010 and 2011 [Member] | Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Proposed Adjustments on Income Tax Assessments			$ 67.0
Written proposal to IRS assessment						$ 15.8
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 8.6			$ 8.6

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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

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

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