Summary of Restructuring Reserve Activity (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Restructuring Cost and Reserve [Line Items]
Document Period End Date			Oct. 01, 2016
Reserve, Beginning Balance			$ 58.7
Restructuring charges	$ 9.1	$ 14.0	27.3	$ 43.9
Usage			(58.8)
Currency			0.4
Reserve, Ending Balance	27.6		27.6
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Reserve, Beginning Balance			44.3
Restructuring charges			18.1
Usage			(39.7)
Currency			0.4
Reserve, Ending Balance	23.1		23.1
Facility closures
Restructuring Cost and Reserve [Line Items]
Reserve, Beginning Balance			14.4
Restructuring charges			9.2
Usage			(19.1)
Currency			0.0
Reserve, Ending Balance	4.5		4.5
Series of Individually Immaterial Business Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges	0.1		4.4
Restructuring charges	9.1		27.3
Severance Costs	$ 8.4		$ 18.1