Acquisitions Changes in Carry Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Mar. 30, 2019 USD ($)
Goodwill [Line Items]
Beginning balance	$ 31,269
Segment Recast	0	[1]
Acquisitions	43,751	[2]
Other, net	37
Ending balance	75,057
Media Networks
Goodwill [Line Items]
Beginning balance	19,388
Segment Recast	(3,399)	[1]
Acquisitions	0	[2]
Other, net	0
Ending balance	15,989
Parks And Resorts
Goodwill [Line Items]
Beginning balance	291
Segment Recast	(291)	[1]
Acquisitions	0	[2]
Other, net	0
Ending balance	0
Studio Entertainment
Goodwill [Line Items]
Beginning balance	7,164
Segment Recast	(70)	[1]
Acquisitions	0	[2]
Other, net	14
Ending balance	7,108
Consumer Products and Interactive
Goodwill [Line Items]
Beginning balance	4,426
Segment Recast	(4,426)	[1]
Acquisitions	0	[2]
Other, net	0
Ending balance	0
Parks, Experiences and Products
Goodwill [Line Items]
Beginning balance	0
Segment Recast	4,487	[1]
Acquisitions	0	[2]
Other, net	0
Ending balance	4,487
Direct-to-Consumer & International
Goodwill [Line Items]
Beginning balance	0
Segment Recast	3,699	[1]
Acquisitions	0	[2]
Other, net	23
Ending balance	3,722
Unallocated
Goodwill [Line Items]
Beginning balance	0
Segment Recast	0
Acquisitions	43,751	[2]
Other, net	0
Ending balance	$ 43,751

[1]
⁽¹⁾ Represents the reallocation of goodwill as a result of the Company recasting its segments (see Note 2).

[2] (2) Represents the acquisition of 21CF and consolidation of Hulu.