Financial Information by Operating Segments- Intersegment Eliminations (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Segment Reporting Information
Revenues:		$ 15,228	$ 14,238	$ 45,127	$ 42,358
Studio Entertainment
Segment Reporting Information
Revenues:	[1]	2,878	2,393	7,836	6,947
Consumer Products and Interactive
Segment Reporting Information
Revenues:	[1]	1,001	1,085	3,528	3,618
Intersegment Eliminations | Studio Entertainment
Segment Reporting Information
Revenues:		119	103	426	391
Intersegment Eliminations | Consumer Products and Interactive
Segment Reporting Information
Revenues:		$ (119)	$ (103)	$ (426)	$ (391)

[1] Studio Entertainment revenues and operating income include an allocation of Consumer Products & Interactive Media 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 Consumer Products & Interactive Media revenues and operating income was $119 million and $103 million for the quarters ended June 30, 2018 and July 1, 2017, respectively, and $426 million and $391 million for the nine months ended June 30, 2018 and July 1, 2017, respectively.