Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions			12 Months Ended
		Nov. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) derivatives	Oct. 01, 2022 USD ($)	Oct. 02, 2021 USD ($)	Nov. 30, 2023 USD ($)	May 31, 2019 USD ($)
Indefinite-lived Intangible Assets [Line Items]
Advertising expense			$ 6,400	$ 7,200	$ 5,500
Ultimate Revenue from Theatrical Release Maximum Period			10 years
Ultimate Revenues from TV Series Delivery of First Episode Maximum Period			10 years
Ultimate Revenues from TV Series Delivery of Recent Episode Maximum Period			5 years
Amortization of Film Library Maximum Period			20 years
Internal-Use software costs capitalized, net of accumulated depreciation			$ 1,200	1,100
Impairment of Intangible Assets (Excluding Goodwill)			3,000	200	$ 300
Goodwill, Impairment Loss	[1]		$ 721
Number of Types of Derivatives | derivatives			2
Redeemable noncontrolling interest			$ 9,055	9,499
Asset Impairment Charges			2,600
General Entertainment and International Sports Linear Networks
Indefinite-lived Intangible Assets [Line Items]
Goodwill, Impairment Loss			700
Content Curation | General Entertainment and International Sports Linear Networks
Indefinite-lived Intangible Assets [Line Items]
Asset Impairment Charges			$ 2,200
Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest			67.00%
Equity Interest Held by NBC Universal | Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest			33.00%
Redeemable noncontrolling interest			$ 9,100
Equity Interest Held by NBC Universal | Hulu LLC | Subsequent Event
Indefinite-lived Intangible Assets [Line Items]
Capital Call Contribution by Noncontrolling Interest Holder						$ 600
Percentage of Tax Benefit Shared Arising from Noncontrolling Interest Acquisition						50.00%
Tax Benefit Amortization Period Arising from Noncontrolling Interest Acquisition						15 years
MLB | BAMTech, LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest			15.00%
Redeemable Noncontrolling Interest, Equity, Redemption Value		$ 900		$ 828
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest		$ 72
Hearst Corporation | Domestic DTC Sports Business
Indefinite-lived Intangible Assets [Line Items]
Contribution to Subsdiary, Noncontrolling Owner			$ 710
Effective ownership interest by noncontrolling owners			20.00%
Minimum
Indefinite-lived Intangible Assets [Line Items]
Amortizable intangible assets, amortization period			5 years
Minimum | Equity Interest Held by NBC Universal | Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value							$ 27,500
Minimum | Equity Interest Held by NBC Universal | Hulu LLC | Subsequent Event
Indefinite-lived Intangible Assets [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value						$ 9,200
Maximum
Indefinite-lived Intangible Assets [Line Items]
Amortizable intangible assets, amortization period			40 years
Attractions, Buildings and Improvements | Minimum
Indefinite-lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life			20 years
Attractions, Buildings and Improvements | Maximum
Indefinite-lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life			40 years
Software and Software Development Costs | Maximum
Indefinite-lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life			5 years

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