Acquisitions - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 27, 2014		Sep. 28, 2013
Goodwill [Roll Forward]
Beginning balance	$ 27,324		$ 25,110
Acquisitions	547		2,381
Dispositions	0		(12)
Other, net	10		(155)
Ending balance	27,881		27,324
Media Networks
Goodwill [Roll Forward]
Beginning balance	16,071		16,131
Acquisitions	270		21
Dispositions	0		(9)
Other, net	37	[1]	(72)
Ending balance	16,378		16,071
Parks and Resorts
Goodwill [Roll Forward]
Beginning balance	253		172
Acquisitions	15		81
Dispositions	0		0
Other, net	23	[1]	0
Ending balance	291		253
Studio Entertainment
Goodwill [Roll Forward]
Beginning balance	6,591		5,680
Acquisitions	219		975
Dispositions	0		0
Other, net	46	[1]	(64)
Ending balance	6,856		6,591
Consumer Products
Goodwill [Roll Forward]
Beginning balance	2,942		1,794
Acquisitions	4		1,149
Dispositions	0		(3)
Other, net	21	[1]	2
Ending balance	2,967		2,942
Interactive
Goodwill [Roll Forward]
Beginning balance	1,467		1,333
Acquisitions	39		155
Dispositions	0		0
Other, net	(117)	[1]	(21)
Ending balance	$ 1,389		$ 1,467

[1] Includes the reallocation of $120 million of goodwill from the Interactive segment to other operating segments as a result of restructuring the Interactive segment.