Debt - Components of Debt (Parenthetical) (Detail)		6 Months Ended
	Nov. 13, 2009 8.375% Senior Notes Due in 2018 [Member]	Jun. 28, 2014 8.375% Senior Notes Due in 2017 [Member]	Dec. 28, 2013 8.375% Senior Notes Due in 2017 [Member]	Jun. 28, 2014 8.125% Senior Notes Due in 2018 [Member]	Dec. 28, 2013 8.125% Senior Notes Due in 2018 [Member]	Jun. 28, 2014 5.375% Senior Notes Due in 2022 [Member]	Dec. 28, 2013 5.375% Senior Notes Due in 2022 [Member]
Debt Instrument [Line Items]
Interest rate on notes		8.375%	8.375%	8.125%	8.125%	5.375%	5.375%
Debt instrument maturity year		2017	2017	2018	2018	2022	2022
Discount rate on issue of senior notes	1.425%