Components of Long-Term Debt (Parenthetical) (Detail)			9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013 Revolving Credit Facility	Dec. 31, 2012 Term loan facility, at a rate of 2.75%, due 10/1/2014	Sep. 29, 2013 3.875% Convertible Senior Subordinated Notes Due 2017	Dec. 31, 2012 3.875% Convertible Senior Subordinated Notes Due 2017	Sep. 29, 2013 6.875% Senior Subordinated Notes Due 2019	Dec. 31, 2012 6.875% Senior Subordinated Notes Due 2019
Line of Credit Facility [Line Items]
Interest rate			1.93%
Interest rate	3.875%	3.875%		2.75%	3.875%	3.875%	6.875%	6.875%
Debt instrument maturity date					2017	2017	2019	2019
Debt instrument maturity date			Jul. 16, 2018	Oct. 01, 2014