Financial Information by Operating Segments (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 30, 2017	Dec. 31, 2016
Segment Reporting Information
Revenues:		$ 15,351	$ 14,784
Segment operating income		3,986	3,956
Media Networks
Segment Reporting Information
Revenues:		6,243	6,233
Segment operating income		1,193	1,362
Parks and Resorts
Segment Reporting Information
Revenues:		5,154	4,555
Segment operating income		1,347	1,110
Studio Entertainment
Segment Reporting Information
Revenues:	[1]	2,504	2,520
Segment operating income	[1]	829	842
Consumer Products and Interactive
Segment Reporting Information
Revenues:	[1]	1,450	1,476
Segment operating income	[1]	$ 617	$ 642

[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 $171 million and $181 million for the quarters ended December 30, 2017 and December 31, 2016, respectively