Acquisitions Changes in Carry Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Jun. 27, 2020 USD ($)
Goodwill [Line Items]
Beginning balance	$ 80,293
Acquisitions	160	[1]
Impairments	(3,074)
Other, net	(146)
Ending balance	77,233
Media Networks
Goodwill [Line Items]
Beginning balance	33,423
Acquisitions	133	[1]
Impairments	0
Other, net	0
Ending balance	33,556
Parks, Experiences and Products
Goodwill [Line Items]
Beginning balance	5,535
Acquisitions	2	[1]
Impairments	0
Other, net	0
Ending balance	5,537
Studio Entertainment
Goodwill [Line Items]
Beginning balance	17,797
Acquisitions	15	[1]
Impairments	0
Other, net	0
Ending balance	17,812
Direct-to-Consumer & International
Goodwill [Line Items]
Beginning balance	23,538
Acquisitions	10	[1]
Impairments	(3,074)
Other, net	(146)
Ending balance	$ 20,328

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