Schedule of Debt (Parenthetical) (Detail)	Dec. 28, 2013	Dec. 29, 2012
Non Recourse Debt
Debt Instrument [Line Items]
Long term debt, due date	2019
Long term debt, interest rate	5.42%
Senior Secured Notes, due 2019 | Recourse Debt
Debt Instrument [Line Items]
Long term debt, due date	2019	2019
7.35% debentures, due 2016 | Recourse Debt
Debt Instrument [Line Items]
Long term debt, due date	2016	2016
Long term debt, interest rate	7.35%	7.35%
Revenue bonds, due in through 2029 | Recourse Debt
Debt Instrument [Line Items]
Long term debt, due date	2029	2029
5% Debentures, due 2030 | Recourse Debt
Debt Instrument [Line Items]
Long term debt, due date	2030
Long term debt, interest rate	5.00%