Disaggregation of Revenue by Major Source (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 17,022	$ 11,779	$ 48,884	$ 50,681
Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues	4,431	4,304	13,427	13,273
Advertising
Disaggregation of Revenue [Line Items]
Revenues	3,163	1,902	9,510	8,089
Subscription fees
Disaggregation of Revenue [Line Items]
Revenues	3,156	2,129	8,702	5,251
Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues	1,152	34	2,298	3,655
Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues	776	80	1,722	3,088
Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues	1,262	264	3,336	4,161
TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	1,230	1,513	4,023	4,747
Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	140	51	280	2,062
Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	790	528	2,681	2,300
Home entertainment
Disaggregation of Revenue [Line Items]
Revenues	236	470	755	1,555
Other
Disaggregation of Revenue [Line Items]
Revenues	686	504	2,150	2,500
Disney Media and Entertainment Distribution
Disaggregation of Revenue [Line Items]
Revenues	12,681	10,714	37,782	36,376
Disney Media and Entertainment Distribution | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues	4,431	4,304	13,427	13,273
Disney Media and Entertainment Distribution | Advertising
Disaggregation of Revenue [Line Items]
Revenues	3,163	1,901	9,508	8,085
Disney Media and Entertainment Distribution | Subscription fees
Disaggregation of Revenue [Line Items]
Revenues	3,156	2,129	8,702	5,251
Disney Media and Entertainment Distribution | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	1,230	1,513	4,023	4,747
Disney Media and Entertainment Distribution | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	140	51	280	2,062
Disney Media and Entertainment Distribution | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	1	8	11	24
Disney Media and Entertainment Distribution | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues	236	470	755	1,555
Disney Media and Entertainment Distribution | Other
Disaggregation of Revenue [Line Items]
Revenues	324	338	1,076	1,379
Disney Parks, Experiences and Products
Disaggregation of Revenue [Line Items]
Revenues	4,341	1,065	11,102	14,305
Disney Parks, Experiences and Products | Advertising
Disaggregation of Revenue [Line Items]
Revenues	0	1	2	4
Disney Parks, Experiences and Products | Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues	1,152	34	2,298	3,655
Disney Parks, Experiences and Products | Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues	776	80	1,722	3,088
Disney Parks, Experiences and Products | Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues	1,262	264	3,336	4,161
Disney Parks, Experiences and Products | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	789	520	2,670	2,276
Disney Parks, Experiences and Products | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 362	$ 166	$ 1,074	$ 1,121