Financial Information by Operating Segments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Oct. 01, 2011
Segment Reporting Information [Line Items]
Equity method investments	$ 2,438	$ 2,052
Goodwill and intangible assets	30,125	29,266
Media Networks
Segment Reporting Information [Line Items]
Equity method investments	2,423	2,044
Goodwill and intangible assets	17,854	17,421
Parks and Resorts
Segment Reporting Information [Line Items]
Equity method investments	8
Goodwill and intangible assets	172	172
Studio Entertainment
Segment Reporting Information [Line Items]
Equity method investments	2	2
Goodwill and intangible assets	6,783	6,498
Consumer Products
Segment Reporting Information [Line Items]
Equity method investments	1	1
Goodwill and intangible assets	3,700	3,715
Interactive
Segment Reporting Information [Line Items]
Equity method investments		4
Goodwill and intangible assets	1,486	1,330
Corporate
Segment Reporting Information [Line Items]
Equity method investments	4	1
Goodwill and intangible assets	$ 130	$ 130