Financial Information by Operating Segments- Intersegment Eliminations (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Segment Reporting Information
Revenues		$ 14,922	$ 14,548	$ 30,225	$ 29,899
Studio Entertainment
Segment Reporting Information
Revenues	[1]	2,134	2,499	3,958	5,008
Parks, Experiences and Products
Segment Reporting Information
Revenues	[1]	6,169	5,903	12,993	12,430
Intersegment Eliminations | Studio Entertainment
Segment Reporting Information
Revenues		126	136	280	307
Intersegment Eliminations | Parks, Experiences and Products
Segment Reporting Information
Revenues		$ (126)	$ (136)	$ (280)	$ (307)

[1] Studio Entertainment revenues and operating income include an allocation of Parks, Experiences and Products revenues, which is meant to reflect royalties on sales of merchandise based on film properties. The increase to Studio Entertainment revenues and operating income and corresponding decrease to Parks, Experiences and Products revenues and operating income was $126 million and $136 million for the quarters ended March 30, 2019 and March 31, 2018, respectively, and $280 million and $307 million for the six months ended March 30, 2019 and March 31, 2018, respectively.