Selected Quarterly Financial Data (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended																	12 Months Ended
	Dec. 28, 2012		Dec. 31, 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
Quarterly Financial Information [Line Items]
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
Gross profit	93.4			103.6		114.2		95.7		134.5		136.3		115.2		122.3		406.9		508.3		789.6
Net loss	$ (23.3)			$ (3.9)		$ (4.7)		$ (139.8)		$ (4.9)		$ (130.1)		$ (29.3)		$ (24.1)		$ (171.7)		$ (188.4)		$ 155.6
Basic	$ (0.06)	[1]		$ (0.01)	[1]	$ (0.01)	[1]	$ (0.38)	[1]	$ (0.01)	[1]	$ (0.36)	[1]	$ (0.08)	[1]	$ (0.07)	[1]	$ (0.47)		$ (0.52)		$ 0.41
Diluted	$ (0.06)	[1]		$ (0.01)	[1]	$ (0.01)	[1]	$ (0.38)	[1]	$ (0.01)	[1]	$ (0.36)	[1]	$ (0.08)	[1]	$ (0.07)	[1]	$ (0.47)	[2]	$ (0.52)	[2]	$ 0.41	[2]
Cash dividends per share	$ 1.02	[3]		$ 0.02	[3]	$ 0.02	[3]	$ 0.02	[3]	$ 0.02		$ 0.02		$ 0.02		$ 0.02
Special dividend			$ 1

[1] The per-share computation for the year is a separate, annual calculation. Accordingly, the sum of the quarterly per-share amounts does not necessarily equal the annual per-share amount.

[2] Dilutive securities are not included in the computation of diluted earnings per share when a company is in a loss position. As such, the numerator and the denominator used in computing both basic and diluted net loss per share for 2012 and 2011 are the same. Diluted weighted average shares outstanding were 368.8 million in 2012 and 367.6 million in 2011.

[3] Includes a special dividend of $1 per share in the fourth quarter of 2012.