Summary of Significant Accounting Policies - Additional Information (Detail) $ in Billions	12 Months Ended
	Sep. 27, 2025 USD ($) derivatives	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)
Indefinite-lived Intangible Assets [Line Items]
Advertising expense	$ 6.5	$ 6.1	$ 6.4
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	$ 1.2	$ 1.3
Number of Types of Derivatives | derivatives	2
Minimum
Indefinite-lived Intangible Assets [Line Items]
Amortizable intangible assets, amortization period	5 years
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