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Restructuring - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Oct. 01, 2016	Sep. 26, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	$ 51.2
Carrying values in excess of estimated fair values	3.5
Expected restructuring cost	50.0
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	45.4
Asset impairment charges
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	3.5	$ 1.6
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	(0.3)
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	2.6
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	44.6
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges (credits)	$ 6.6

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Amount Of Carrying Amount In Excess Of Fair Value

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Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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