Debt - Components of Debt (Parenthetical) (Detail)	6 Months Ended			6 Months Ended
	Jun. 29, 2013 8.375% Senior Notes Due in 2017 [Member]	Dec. 29, 2012 8.375% Senior Notes Due in 2017 [Member]	Nov. 13, 2009 8.375% Senior Notes Due in 2017 [Member]	Jun. 29, 2013 8.125% Senior Notes Due in 2018 [Member]	Dec. 29, 2012 8.125% Senior Notes Due in 2018 [Member]	Aug. 17, 2010 8.125% Senior Notes Due in 2018 [Member]
Debt Instrument [Line Items]
Interest rate on notes	8.375%	8.375%		8.125%	8.125%	8.125%
Debt instrument maturity year	2017			2018
Discount rate on issue of senior notes			1.425%