Summary of Restructuring and Other Charges (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended									3 Months Ended	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010	Dec. 28, 2012 Severance and other termination benefits	Dec. 30, 2011 Severance and other termination benefits	Dec. 31, 2010 Severance and other termination benefits	Dec. 28, 2012 Facility- And Asset-Related Charges	Dec. 30, 2011 Facility- And Asset-Related Charges	Dec. 31, 2010 Facility- And Asset-Related Charges	Mar. 30, 2012 Accelerated amortization of intangible assets	Dec. 28, 2012 Accelerated amortization of intangible assets	Dec. 28, 2012 Other obligations	Dec. 30, 2011 Other obligations
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 119.0	$ 20.3	$ 9.5	$ 32.9	$ 15.9	$ 6.9	$ 37.3	$ 3.8	$ 2.6	$ 47.7	$ 47.7	$ 1.1	$ 0.6