Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended	41 Months Ended
	May. 14, 2014	Dec. 31, 2013	Oct. 02, 2015	Apr. 24, 2012
Stockholders' Equity Note [Abstract]
Authorized stock repurchase value	$ 300.0	$ 220.0		$ 25.0
Increase in stock repurchase program	$ 80.0	$ 195.0
Stock Repurchased and Retired During Period, Shares			40.2
Weighted average purchase price per share			$ 6.25
Stock Repurchased and Retired During Period, Value			$ 252.3
Stock Repurchased and Retired During Period, Expenses			1.0
Remaining authorized repurchase amount			$ 48.6