Defined Benefit Plan Assets Measured at Fair Value (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Oct. 01, 2011
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Asset allocation ranges	100.00%	100.00%
U S Large Cap | Equity investments
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Asset allocation ranges	18.00%	14.00%
U S Large Cap | Equity investments | Shares Held In The Walt Disney Company
Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items]
Large cap domestic equities, shares of company common stock	2.8	2.8
Large cap domestic equities, value of company common stock	147	85
Asset allocation ranges	2.00%	1.00%