Description of the Business and Segment Information - Financial Information by Operating Segments (Parenthetical) (Detail) - USD ($) $ in Millions	Oct. 01, 2016	Oct. 03, 2015
Segment Reporting Information [Line Items]
Equity method investments	$ 4,082	$ 2,483
Goodwill and intangible assets	34,759	34,998
Media Networks
Segment Reporting Information [Line Items]
Equity method investments	4,032	2,454
Goodwill and intangible assets	18,153	18,186
Parks and Resorts
Segment Reporting Information [Line Items]
Equity method investments	22	9
Goodwill and intangible assets	373	376
Studio Entertainment
Segment Reporting Information [Line Items]
Equity method investments	3	2
Goodwill and intangible assets	8,450	8,538
Consumer Products and Interactive
Segment Reporting Information [Line Items]
Equity method investments	0	1
Goodwill and intangible assets	7,653	7,768
Corporate
Segment Reporting Information [Line Items]
Equity method investments	25	17
Goodwill and intangible assets	$ 130	$ 130