Consolidated Revenue by Country Based on Customer Location (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 28, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 30, 2011	Sep. 30, 2011	Jul. 01, 2011	Apr. 01, 2011	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Revenue from External Customer [Line Items]
Total revenue	$ 242.2	$ 264.4	$ 288.1	$ 257.9	$ 316.8	$ 329.8	$ 316.7	$ 322.4	$ 1,052.6	$ 1,285.7	$ 1,642.3
UNITED STATES
Revenue from External Customer [Line Items]
Consolidated revenue									513.4	642.5	1,138.2
All Other Countries
Revenue from External Customer [Line Items]
Consolidated revenue									$ 539.2	$ 643.2	$ 504.1