Disaggregation of Revenue by Major Source (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Apr. 03, 2021	Mar. 28, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 15,613	$ 18,025	$ 31,862	$ 38,902
Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues	4,594	4,529	8,996	8,969
Advertising
Disaggregation of Revenue [Line Items]
Revenues	2,583	2,789	6,347	6,187
Subscription fees
Disaggregation of Revenue [Line Items]
Revenues	3,000	1,796	5,546	3,122
Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues	597	1,554	1,146	3,621
Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues	514	1,377	946	3,008
Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues	911	1,584	2,074	3,897
TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	1,624	1,665	2,793	3,234
Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	109	603	140	2,011
Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	796	716	1,891	1,772
Home entertainment
Disaggregation of Revenue [Line Items]
Revenues	219	489	519	1,085
Other
Disaggregation of Revenue [Line Items]
Revenues	666	923	1,464	1,996
Disney Media and Entertainment Distribution
Disaggregation of Revenue [Line Items]
Revenues	12,440	12,365	25,101	25,662
Disney Media and Entertainment Distribution | Affiliate fees
Disaggregation of Revenue [Line Items]
Revenues	4,594	4,529	8,996	8,969
Disney Media and Entertainment Distribution | Advertising
Disaggregation of Revenue [Line Items]
Revenues	2,582	2,788	6,345	6,184
Disney Media and Entertainment Distribution | Subscription fees
Disaggregation of Revenue [Line Items]
Revenues	3,000	1,796	5,546	3,122
Disney Media and Entertainment Distribution | TV/SVOD distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	1,624	1,665	2,793	3,234
Disney Media and Entertainment Distribution | Theatrical distribution licensing
Disaggregation of Revenue [Line Items]
Revenues	109	603	140	2,011
Disney Media and Entertainment Distribution | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	5	8	10	16
Disney Media and Entertainment Distribution | Home entertainment
Disaggregation of Revenue [Line Items]
Revenues	219	489	519	1,085
Disney Media and Entertainment Distribution | Other
Disaggregation of Revenue [Line Items]
Revenues	307	487	752	1,041
Disney Parks, Experiences and Products
Disaggregation of Revenue [Line Items]
Revenues	3,173	5,660	6,761	13,240
Disney Parks, Experiences and Products | Advertising
Disaggregation of Revenue [Line Items]
Revenues	1	1	2	3
Disney Parks, Experiences and Products | Theme park admissions
Disaggregation of Revenue [Line Items]
Revenues	597	1,554	1,146	3,621
Disney Parks, Experiences and Products | Resort and vacations
Disaggregation of Revenue [Line Items]
Revenues	514	1,377	946	3,008
Disney Parks, Experiences and Products | Retail and wholesale sales of merchandise, food and beverage
Disaggregation of Revenue [Line Items]
Revenues	911	1,584	2,074	3,897
Disney Parks, Experiences and Products | Merchandise licensing
Disaggregation of Revenue [Line Items]
Revenues	791	708	1,881	1,756
Disney Parks, Experiences and Products | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 359	$ 436	$ 712	$ 955