Disaggregation of Revenue by Geographical Markets (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	[1]	Jun. 29, 2019	Jun. 30, 2018	[2]
Disaggregation of Revenue [Line Items]
Revenues		$ 20,245	$ 15,229		$ 50,470	$ 45,128
United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		13,909			37,154
Europe
Disaggregation of Revenue [Line Items]
Revenues		2,353			5,452
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		2,905			5,641
Latin America
Disaggregation of Revenue [Line Items]
Revenues		1,078			2,223
Media Networks
Disaggregation of Revenue [Line Items]
Revenues		6,713	5,534		18,317	16,597
Media Networks | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		6,338			17,464
Media Networks | Europe
Disaggregation of Revenue [Line Items]
Revenues		295			585
Media Networks | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		63			195
Media Networks | Latin America
Disaggregation of Revenue [Line Items]
Revenues		17			73
Parks, Experiences and Products
Disaggregation of Revenue [Line Items]
Revenues	[3]	6,575	6,136		19,570	18,566
Parks, Experiences and Products | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		4,911			14,742
Parks, Experiences and Products | Europe
Disaggregation of Revenue [Line Items]
Revenues		776			2,261
Parks, Experiences and Products | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		837			2,399
Parks, Experiences and Products | Latin America
Disaggregation of Revenue [Line Items]
Revenues		51			168
Studio Entertainment
Disaggregation of Revenue [Line Items]
Revenues	[3]	3,836	2,880		7,817	7,888
Studio Entertainment | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		1,728			3,840
Studio Entertainment | Europe
Disaggregation of Revenue [Line Items]
Revenues		889			1,878
Studio Entertainment | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		874			1,548
Studio Entertainment | Latin America
Disaggregation of Revenue [Line Items]
Revenues		345			551
Direct-to-Consumer & International
Disaggregation of Revenue [Line Items]
Revenues		3,858	827		5,921	2,589
Direct-to-Consumer & International | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		1,533			2,078
Direct-to-Consumer & International | Europe
Disaggregation of Revenue [Line Items]
Revenues		473			846
Direct-to-Consumer & International | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		1,187			1,566
Direct-to-Consumer & International | Latin America
Disaggregation of Revenue [Line Items]
Revenues		665			1,431
Eliminations
Disaggregation of Revenue [Line Items]
Revenues		(737)	$ (148)		(1,155)	$ (512)
Eliminations | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		(601)			(970)
Eliminations | Europe
Disaggregation of Revenue [Line Items]
Revenues		(80)			(118)
Eliminations | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		(56)			(67)
Eliminations | Latin America
Disaggregation of Revenue [Line Items]
Revenues		$ 0			$ 0

[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.