Fair Value Measurements - Carrying Value and Estimated Fair Values of Outstanding Debt (Parenthetical) (Detail)	6 Months Ended
	Jun. 29, 2013 8.375% Senior Notes Due in 2017 [Member]	Jun. 29, 2013 8.125% Senior Notes Due in 2018 [Member]	Jun. 29, 2013 Estimate of Fair Value, Fair Value Disclosure [Member] 8.375% Senior Notes Due in 2017 [Member]	Dec. 29, 2012 Estimate of Fair Value, Fair Value Disclosure [Member] 8.375% Senior Notes Due in 2017 [Member]	Jun. 29, 2013 Estimate of Fair Value, Fair Value Disclosure [Member] 8.125% Senior Notes Due in 2018 [Member]	Dec. 29, 2012 Estimate of Fair Value, Fair Value Disclosure [Member] 8.125% Senior Notes Due in 2018 [Member]	Jun. 29, 2013 Carrying (Reported) Amount, Fair Value Disclosure [Member] 8.375% Senior Notes Due in 2017 [Member]	Dec. 29, 2012 Carrying (Reported) Amount, Fair Value Disclosure [Member] 8.375% Senior Notes Due in 2017 [Member]	Jun. 29, 2013 Carrying (Reported) Amount, Fair Value Disclosure [Member] 8.125% Senior Notes Due in 2018 [Member]	Dec. 29, 2012 Carrying (Reported) Amount, Fair Value Disclosure [Member] 8.125% Senior Notes Due in 2018 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate on notes			8.375%	8.375%	8.125%	8.125%	8.375%	8.375%	8.125%	8.125%
Debt instrument maturity year	2017	2018