Acquisitions Changes in Carry Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Apr. 03, 2021 USD ($)
Goodwill [Line Items]
Beginning balance	$ 77,689
Segment Recast	0	[1]
Currency translation adjustments and other, net	172
Ending balance	77,861
Media Networks
Goodwill [Line Items]
Beginning balance	33,991
Segment Recast	(33,991)	[1]
Currency translation adjustments and other, net	0
Ending balance	0
Disney Parks, Experiences and Products
Goodwill [Line Items]
Beginning balance	5,550
Segment Recast	0	[1]
Currency translation adjustments and other, net	0
Ending balance	5,550
Studio Entertainment
Goodwill [Line Items]
Beginning balance	17,795
Segment Recast	(17,795)	[1]
Currency translation adjustments and other, net	0
Ending balance	0
Direct-to-Consumer & International
Goodwill [Line Items]
Beginning balance	20,353
Segment Recast	(20,353)	[1]
Currency translation adjustments and other, net	0
Ending balance	0
Disney Media and Entertainment Distribution
Goodwill [Line Items]
Beginning balance	0
Segment Recast	72,139	[1]
Currency translation adjustments and other, net	172
Ending balance	$ 72,311

[1] Represents the reallocation of goodwill as a result of the Company recasting its segments.