Description of Business and Segment Information Financial Information by Operating Segments (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Segment Reporting Information
Revenues	$ 11,779	$ 20,262	$ 50,681	$ 50,489
Segment operating income	1,099	3,952	7,502	11,422
Media Networks
Segment Reporting Information
Revenues	6,562	6,713	21,180	18,317
Segment operating income	3,153	2,136	7,158	5,696
Direct-to-Consumer & International
Segment Reporting Information
Revenues	3,969	3,875	12,114	5,940
Segment operating income	(706)	(562)	(2,226)	(1,084)
Studio Entertainment intersegment content transactions | Media Networks
Segment Reporting Information
Revenues	(36)	(41)	(147)	(75)
Segment operating income	2	(16)	(8)	(11)
Studio Entertainment intersegment content transactions | Direct-to-Consumer & International
Segment Reporting Information
Revenues	(506)	(82)	(1,652)	(182)
Segment operating income	27	(35)	(246)	(79)
Media Networks intersegment content transactions | Direct-to-Consumer & International
Segment Reporting Information
Revenues	(931)	(614)	(2,777)	(898)
Segment operating income	(85)	(82)	(275)	(84)
Intersegment transactions
Segment Reporting Information
Revenues	(1,473)	(737)	(4,576)	(1,155)
Segment operating income	$ (56)	$ (133)	$ (529)	$ (174)