Equity in Income of Investees by Segment (Detail) (USD $) In Millions	12 Months Ended
	Oct. 01, 2011		Oct. 02, 2010		Oct. 03, 2009
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	$ 585		$ 440		$ 577
Media Networks
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	584	[1]	438	[1]	567	[1]
Studio Entertainment
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees					(4)
Consumer Products
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees					2
Interactive Media
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees					2
Corporate
Schedule of Equity Method Investments [Line Items]
Equity in the income of investees	$ 1		$ 2		$ 10

[1] Substantially all of these amounts relate to investments at Cable Networks.