Fair Value Measurements - Carrying Value and Estimated Fair Values of Outstanding Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 29, 2012
8.375% Senior Notes Due in 2017 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument maturity year	2017
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	8.125%
Debt instrument maturity year	2018
Estimate of Fair Value, Fair Value Disclosure [Member] | 8.375% Senior Notes Due in 2017 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate on notes	8.375%	[1]
Estimate of Fair Value, 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	8.125%	[1]
Carrying (Reported) Amount, Fair Value Disclosure [Member] | 8.375% Senior Notes Due in 2017 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate on notes	8.375%

[1] The fair values were based on the trading levels and bid/offer prices observed by a market participant and are considered level 1 financial instruments.