Disaggregation of Revenue by Major Source (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
Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		4,449	3,332		11,481	9,934
Advertising
Disaggregation of Revenue [Line Items]
Revenues		3,363	1,988		7,884	6,310
Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues		1,956	1,834		5,657	5,356
Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues		1,610	1,530		4,644	4,454
Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues		1,877	1,800		5,767	5,566
TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		1,485	1,256		3,926	3,464
Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		2,240	1,505		3,365	3,630
Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		769	694		2,455	2,443
Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		456	417		1,200	1,300
Other
Disaggregation of Revenue [Line Items]
Revenues		2,040	873		4,091	2,671
Media Networks
Disaggregation of Revenue [Line Items]
Revenues		6,713	5,534		18,317	16,597
Media Networks | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		3,564	2,981		9,873	8,891
Media Networks | Advertising
Disaggregation of Revenue [Line Items]
Revenues		1,874	1,677		5,521	5,283
Media Networks | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		1,150	822		2,617	2,205
Media Networks | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Media Networks | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Media Networks | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Media Networks | Other
Disaggregation of Revenue [Line Items]
Revenues		125	54		306	218
Parks, Experiences and Products
Disaggregation of Revenue [Line Items]
Revenues	[3]	6,575	6,136		19,570	18,566
Parks, Experiences and Products | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Parks, Experiences and Products | Advertising
Disaggregation of Revenue [Line Items]
Revenues		0	1		3	5
Parks, Experiences and Products | Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues		1,956	1,834		5,657	5,356
Parks, Experiences and Products | Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues		1,610	1,530		4,644	4,454
Parks, Experiences and Products | Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues		1,877	1,800		5,767	5,566
Parks, Experiences and Products | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Parks, Experiences and Products | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Parks, Experiences and Products | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		631	560		2,009	1,963
Parks, Experiences and Products | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Parks, Experiences and Products | Other
Disaggregation of Revenue [Line Items]
Revenues		501	411		1,490	1,222
Studio Entertainment
Disaggregation of Revenue [Line Items]
Revenues	[3]	3,836	2,880		7,817	7,888
Studio Entertainment | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Studio Entertainment | Advertising
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Studio Entertainment | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		746	560		2,069	1,698
Studio Entertainment | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		2,240	1,505		3,365	3,630
Studio Entertainment | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		126	116		406	426
Studio Entertainment | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		432	388		1,127	1,220
Studio Entertainment | Other
Disaggregation of Revenue [Line Items]
Revenues		292	311		850	914
Direct-to-Consumer & International
Disaggregation of Revenue [Line Items]
Revenues		3,858	827		5,921	2,589
Direct-to-Consumer & International | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		993	351		1,728	1,043
Direct-to-Consumer & International | Advertising
Disaggregation of Revenue [Line Items]
Revenues		1,489	310		2,360	1,022
Direct-to-Consumer & International | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		218	22		275	73
Direct-to-Consumer & International | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Direct-to-Consumer & International | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		12	18		40	54
Direct-to-Consumer & International | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		24	29		73	80
Direct-to-Consumer & International | Other
Disaggregation of Revenue [Line Items]
Revenues		1,122	97		1,445	317
Eliminations
Disaggregation of Revenue [Line Items]
Revenues		(737)	(148)		(1,155)	(512)
Eliminations | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues		(108)	0		(120)	0
Eliminations | Advertising
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Eliminations | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		(629)	(148)		(1,035)	(512)
Eliminations | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Eliminations | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Eliminations | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues		0	0		0	0
Eliminations | Other
Disaggregation of Revenue [Line Items]
Revenues		$ 0	$ 0		$ 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.