International Theme Parks Impact of Consolidating Income Statements of International Theme Parks (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Sep. 28, 2019
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues	$ 67,418	$ 65,388	$ 69,607
Costs and expenses	(63,759)	(61,594)	(57,777)
Equity in the loss of investees	761	$ 651	$ (103)
International Theme Parks
Schedule of Condensed Consolidating Statement of Operations [Line Items]
Revenues	1,698
Costs and expenses	(2,845)
Equity in the loss of investees	$ (19)