Acquisitions Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2020		Sep. 28, 2019
Goodwill [Roll Forward]
Beginning balance	$ 80,293		$ 31,269
Acquisitions	732	[1]	49,085	[2]
Dispositions	0		0
Goodwill, Impairment Loss	(3,074)
Other, net	(262)		(61)
Ending balance	77,689		80,293
Media Networks
Goodwill [Roll Forward]
Beginning balance	33,423		15,989
Acquisitions	568	[1]	17,434	[2]
Dispositions	0		0
Goodwill, Impairment Loss	0
Other, net	0		0
Ending balance	33,991		33,423
Parks, Experiences and Products
Goodwill [Roll Forward]
Beginning balance	5,535		4,487
Acquisitions	15	[1]	1,048	[2]
Dispositions	0		0
Goodwill, Impairment Loss	0
Other, net	0		0
Ending balance	5,550		5,535
Studio Entertainment
Goodwill [Roll Forward]
Beginning balance	17,797		7,094
Acquisitions	98	[1]	10,711	[2]
Dispositions	0		0
Goodwill, Impairment Loss	0
Other, net	(100)		(8)
Ending balance	17,795		17,797
Direct-to-Consumer & International
Goodwill [Roll Forward]
Beginning balance	23,538		3,699
Acquisitions	51	[1]	19,892	[2]
Dispositions	0		0
Goodwill, Impairment Loss	(3,074)
Other, net	(162)		(53)
Ending balance	$ 20,353		$ 23,538

[1] Reflects updates to allocation of purchase price for the acquisition of TFCF.

[2] Represents the acquisition of TFCF and consolidation of Hulu.