Restructuring and Impairment Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 78		$ 138
Impairment charges	22	16	132
Restructuring and impairment charges	100	55	270
Studio Entertainment
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges		33	151
Interactive
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges		22
Media Networks
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges			$ 95

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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