Notes Payable and Long-Term Debt (Parenthetical) (Detail)	Dec. 29, 2012	Dec. 31, 2011
8.75% debentures due 2013
Debt Instrument [Line Items]
Interest rate of debt	8.75%	8.75%
Secured debt, 13.875% notes due 2014
Debt Instrument [Line Items]
Interest rate of debt	13.875%	13.875%
Secured debt, 8% notes due 2016
Debt Instrument [Line Items]
Interest rate of debt	8.00%	8.00%
Contracts And Notes
Debt Instrument [Line Items]
Weighted average interest rate of short-term debt	3.30%	3.80%
Capital Lease Obligations
Debt Instrument [Line Items]
Weighted average interest rate of debt	2.70%	3.00%
Notes payable
Debt Instrument [Line Items]
Weighted average interest rate of short-term debt	1.30%	3.10%