Summary of Restructuring and Other Charges (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012 Severance and other termination benefits	Sep. 30, 2011 Severance and other termination benefits	Sep. 28, 2012 Severance and other termination benefits	Sep. 30, 2011 Severance and other termination benefits	Sep. 28, 2012 Facility and other exit costs	Sep. 30, 2011 Facility and other exit costs	Sep. 28, 2012 Facility and other exit costs	Sep. 30, 2011 Facility and other exit costs	Mar. 30, 2012 Accelerated amortization of intangible assets	Sep. 28, 2012 Accelerated amortization of intangible assets	Sep. 28, 2012 Other obligations
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 3.3	$ 19.5	$ 110.2	$ 20.5	$ 2.3	$ 14.5	$ 24.4	$ 15.7	$ 1.0	$ 5.0	$ 36.9	$ 4.8	$ 47.7	$ 47.7	$ 1.2