Summary of Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 29, 2012
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	$ 62.5
Current year charges	11.0
Utilization Cash	(59.4)
Utilization Non-cash
Accrual as of end of period	14.1
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	56.8
Current year charges	8.9
Utilization Cash	(57.4)
Utilization Non-cash
Accrual as of end of period	8.3
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Accrual as of beginning of period	5.7
Current year charges	1.4
Utilization Cash	(1.3)
Utilization Non-cash
Accrual as of end of period	5.8
Other related costs
Restructuring Cost and Reserve [Line Items]
Current year charges	0.7
Utilization Cash	(0.7)
Utilization Non-cash