Restructuring and Impairment Charges - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		$ 2,600
Goodwill, Impairment Loss	[1]	721
Goodwill		77,067	$ 77,897	$ 78,071
Restructuring and impairment charges		3,892	237	654
Linear Networks and International Sports Linear Networks
Restructuring Cost and Reserve [Line Items]
Goodwill, Impairment Loss		700
Licensing Agreements
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		600
Payments for Restructuring		400
Produced Content
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		2,000
Russia Business Exit
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges			$ 200
Restructuring and impairment charges		100
Russia Business Exit | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges		400
Russia Business Exit | Equity investment impairments
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges		$ 100
Closure of Animation Studio and Retail Stores
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges				$ 700

[1] Reflects goodwill impairments at entertainment and international sports linear networks (See Note 18).