Assets and Liabilities Measured at Fair Value on a Recurring Basis (Parenthetical) (Detail) (USD $) In Millions	Oct. 01, 2011	Oct. 02, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Netting arrangement by counterparty with respect to certain derivative contracts in a liability position have been netted against contracts in an asset position	$ 167	$ 206