Subsequent Event - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended		6 Months Ended	12 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended	1 Months Ended
	May 20, 2014	Dec. 12, 2013	Jun. 28, 2014	Dec. 28, 2013	Jun. 28, 2014 Share Repurchase Program [Member]	Jun. 28, 2014 Share Repurchase Program [Member]	Jul. 30, 2014 Subsequent Event [Member] Share Repurchase Program [Member]	Jul. 28, 2014 Subsequent Event [Member] Share Repurchase Program [Member]
Subsequent Event [Line Items]
Share repurchase program shares authorized to be repurchased	$ 30	$ 10					$ 50
Shares repurchased under share repurchase program			30,710	78,580		161,900		298,700
Share repurchase program, remaining authorized amount					$ 21.5		$ 26.9	$ 14.5
Common stock repurchased, average price			$ 56.04	$ 44.39		$ 52.75		$ 48.68