Financial Information by Operating Segments- Intersegment Eliminations (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018		Jun. 29, 2019	Jun. 30, 2018
Segment Reporting Information
Revenues		$ 20,245	$ 15,229	[1]	$ 50,470	$ 45,128	[2]
Studio Entertainment
Segment Reporting Information
Revenues	[3]	3,836	2,880	[1]	7,817	7,888	[2]
Parks, Experiences and Products
Segment Reporting Information
Revenues	[3]	6,575	6,136	[1]	19,570	18,566	[2]
Intersegment Eliminations | Studio Entertainment
Segment Reporting Information
Revenues		126	119		406	426
Intersegment Eliminations | Parks, Experiences and Products
Segment Reporting Information
Revenues		$ (126)	$ (119)		$ (406)	$ (426)

[1] Amounts reflect our historical accounting prior to the adoption of the new revenue guidance.

[2] Amounts reflect our historical accounting prior to the adoption of the new revenue guidance.

[3] 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 $119 million for the quarters ended June 29, 2019 and June 30, 2018, respectively, and $406 million and $426 million for the nine months ended June 29, 2019 and June 30, 2018, respectively.