Summary of Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	$ 44.2
Current year charges	17.0
Utilization Cash	(12.2)
Utilization Non-cash	(4.0)
Accrual as of end of period	45.0
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	38.5
Current year charges	8.2
Utilization Cash	(7.5)
Accrual as of end of period	39.2
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	5.7
Current year charges	0.3
Utilization Cash	(0.2)
Accrual as of end of period	5.8
Asset Impairment Charge
Restructuring Cost and Reserve [Line Items]
Current year charges	4.0
Utilization Non-cash	(4.0)
Other related costs
Restructuring Cost and Reserve [Line Items]
Current year charges	4.5
Utilization Cash	$ (4.5)