Stockholders' Equity - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended		3 Months Ended
	Feb. 19, 2013	Jan. 28, 2013	Mar. 29, 2013
Stock Repurchase Program [Line Items]
Authorized stock repurchase value		$ 25	$ 135
Common stock repurchased and retired, shares			1.6
Common stock repurchased and retired, per shares value			$ 5.76
Common stock repurchased and retired, aggregate value			9.3
Common stock repurchase program, authorized amount remaining			103.1
Common Stock [Member]
Stock Repurchase Program [Line Items]
Increase in stock repurchase program	$ 35.0	$ 75.0	$ 31.9