Summary of Restructuring and Other Charges (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 29, 2012	Jun. 29, 2012	Jul. 01, 2011
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 0.9	$ 106.9	$ 1.0
Severance and other termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(2.0)	22.1	1.2
Facility and other exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	2.9	35.9	(0.2)
Accelerated amortization of intangible assets
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		47.7
Other obligations
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges		$ 1.2