Disaggregation of Revenue by Geographical Markets (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues		$ 14,922	$ 14,548	$ 30,225	$ 29,899
United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		11,308		23,236
Europe
Disaggregation of Revenue [Line Items]
Revenues		1,541		3,125
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		1,481		2,720
Latin America
Disaggregation of Revenue [Line Items]
Revenues		592		1,144
Media Networks
Disaggregation of Revenue [Line Items]
Revenues		5,525	5,508	11,446	11,063
Media Networks | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		5,307		10,995
Media Networks | Europe
Disaggregation of Revenue [Line Items]
Revenues		167		309
Media Networks | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		47		110
Media Networks | Latin America
Disaggregation of Revenue [Line Items]
Revenues		4		32
Parks, Experiences and Products
Disaggregation of Revenue [Line Items]
Revenues	[1]	6,169	5,903	12,993	12,430
Parks, Experiences and Products | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		4,700		9,841
Parks, Experiences and Products | Europe
Disaggregation of Revenue [Line Items]
Revenues		631		1,486
Parks, Experiences and Products | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		789		1,550
Parks, Experiences and Products | Latin America
Disaggregation of Revenue [Line Items]
Revenues		49		116
Studio Entertainment
Disaggregation of Revenue [Line Items]
Revenues	[1]	2,134	2,499	3,958	5,008
Studio Entertainment | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		1,066		2,104
Studio Entertainment | Europe
Disaggregation of Revenue [Line Items]
Revenues		550		963
Studio Entertainment | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		393		679
Studio Entertainment | Latin America
Disaggregation of Revenue [Line Items]
Revenues		125		212
Direct-to-Consumer & International
Disaggregation of Revenue [Line Items]
Revenues		955	831	1,873	1,762
Direct-to-Consumer & International | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		294		519
Direct-to-Consumer & International | Europe
Disaggregation of Revenue [Line Items]
Revenues		147		336
Direct-to-Consumer & International | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		135		269
Direct-to-Consumer & International | Latin America
Disaggregation of Revenue [Line Items]
Revenues		379		749
21CF
Disaggregation of Revenue [Line Items]
Revenues		373	0	373	0
21CF | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		149		149
21CF | Europe
Disaggregation of Revenue [Line Items]
Revenues		68		68
21CF | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		121		121
21CF | Latin America
Disaggregation of Revenue [Line Items]
Revenues		35		35
Eliminations
Disaggregation of Revenue [Line Items]
Revenues		(234)	$ (193)	(418)	$ (364)
Eliminations | United States and Canada
Disaggregation of Revenue [Line Items]
Revenues		(208)		(372)
Eliminations | Europe
Disaggregation of Revenue [Line Items]
Revenues		(22)		(37)
Eliminations | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenues		(4)		(9)
Eliminations | Latin America
Disaggregation of Revenue [Line Items]
Revenues		$ 0		$ 0

[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.