Summary of Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2014
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	$ 44.3
Current year charges	65.6
Utilization Cash	(47.0)
Utilization Non-cash	(0.1)
Accrual as of end of period	62.8
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	38.7
Current year charges	61.1
Utilization Cash	(42.0)
Accrual as of end of period	57.8
Asset Impairment Charge
Restructuring Cost and Reserve [Line Items]
Current year charges	0.1
Utilization Non-cash	(0.1)
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	5.6
Current year charges	0.1
Utilization Cash	(0.7)
Accrual as of end of period	5.0
Other related costs
Restructuring Cost and Reserve [Line Items]
Current year charges	4.3
Utilization Cash	$ (4.3)