Financial Information by Operating Segments (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
Segment operating income		3,816	4,237	7,471	8,223
Media Networks
Segment Reporting Information
Revenues		5,525	5,508	11,446	11,063
Segment operating income		2,185	2,258	3,515	3,501
Parks, Experiences and Products
Segment Reporting Information
Revenues	[1]	6,169	5,903	12,993	12,430
Segment operating income	[1]	1,506	1,309	3,658	3,263
Studio Entertainment
Segment Reporting Information
Revenues	[1]	2,134	2,499	3,958	5,008
Segment operating income	[1]	534	874	843	1,699
Direct-to-Consumer & International
Segment Reporting Information
Revenues		955	831	1,873	1,762
Segment operating income		(393)	(188)	(529)	(230)
21CF
Segment Reporting Information
Revenues		373	0	373	0
Segment operating income		25	0	25	0
Eliminations
Segment Reporting Information
Revenues		(234)	(193)	(418)	(364)
Segment operating income		$ (41)	$ (16)	$ (41)	$ (10)

[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.