Acquisitions Changes in Carry Amount of Goodwill (Details) $ in Millions	3 Months Ended
	Dec. 28, 2019 USD ($)
Goodwill [Line Items]
Beginning balance	$ 80,293
Acquisitions	27	[1]
Other, net	(6)
Ending balance	80,314
Media Networks
Goodwill [Line Items]
Beginning balance	33,423
Acquisitions	17	[1]
Other, net	0
Ending balance	33,440
Parks, Experiences and Products
Goodwill [Line Items]
Beginning balance	5,535
Acquisitions	2	[1]
Other, net	0
Ending balance	5,537
Studio Entertainment
Goodwill [Line Items]
Beginning balance	17,797
Acquisitions	1	[1]
Other, net	0
Ending balance	17,798
Direct-to-Consumer & International
Goodwill [Line Items]
Beginning balance	23,538
Acquisitions	7	[1]
Other, net	(6)
Ending balance	$ 23,539

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