Summary of Restructuring Reserve Activity (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015 USD ($) employee	Jun. 28, 2014 USD ($)	Jul. 04, 2015 USD ($) employee	Jun. 28, 2014 USD ($)
Restructuring Cost and Reserve [Line Items]
Reserve, Beginning Balance			$ 97.6
Restructuring charges	$ 5.0	$ (1.7)	29.9	$ (5.4)
Usage			(41.1)
Currency			(3.6)
Reserve, Ending Balance	82.8		82.8
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Reserve, Beginning Balance			81.2
Restructuring charges			25.8
Usage			(36.5)
Currency			(3.4)
Reserve, Ending Balance	67.1		67.1
Facility closures
Restructuring Cost and Reserve [Line Items]
Reserve, Beginning Balance			16.4
Restructuring charges			4.1
Usage			(4.6)
Currency			(0.2)
Reserve, Ending Balance	$ 15.7		$ 15.7
Series of Individually Immaterial Business Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Number of employees used to determine employee termination costs | employee	180		420
Restructuring Fiscal 2014 Plan [Member] | Series of Individually Immaterial Business Acquisitions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5.0		$ 29.9
Severance Costs			25.8
Business Exit Costs	$ 0.3		$ 4.1