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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Oct. 01, 2022 USD ($) derivatives	Oct. 02, 2021 USD ($)	Oct. 03, 2020 USD ($)	Nov. 30, 2022 USD ($)	May 13, 2019 USD ($)	Sep. 25, 2017 USD ($)
Indefinite-lived Intangible Assets [Line Items]
Advertising expense	$ 7,200	$ 5,500	$ 4,700
Amortization of Film Library Maximum Period	20 years
Internal-Use software costs capitalized, net of accumulated depreciation	$ 1,100	1,200
Impairment of Intangible Assets (Excluding Goodwill)	$ 200	300	5,200
Number of Types of Derivatives \| derivatives	2
Redeemable noncontrolling interest	$ 9,499	$ 9,213
International Channels
Indefinite-lived Intangible Assets [Line Items]
Goodwill, Impairment Loss			3,100
Distribution Rights \| International Channels
Indefinite-lived Intangible Assets [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)			$ 1,900
Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest	67.00%
BAMTech, LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest	85.00%
Equity Interest Held by NBC Universal \| Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest	33.00%
MLB \| BAMTech, LLC
Indefinite-lived Intangible Assets [Line Items]
Equity Method Investment, Ownership Interest	15.00%
Redeemable Noncontrolling Interest, Equity, Redemption Value	$ 828
MLB \| BAMTech, LLC \| Subsequent Event
Indefinite-lived Intangible Assets [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value				$ 900
Minimum
Indefinite-lived Intangible Assets [Line Items]
Amortizable intangible assets, maximum amortization period	40 years
Minimum \| Equity Interest Held by NBC Universal \| Hulu LLC
Indefinite-lived Intangible Assets [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value					$ 27,500
Redeemable noncontrolling interest	$ 8,700
Minimum \| MLB \| BAMTech, LLC
Indefinite-lived Intangible Assets [Line Items]
Redeemable Noncontrolling Interest, Equity, Redemption Value						$ 563
Preferred Stock Return on NCI, Accretion Percentage						8.00%
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	7 years