Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Income Taxes [Line Items]
Valuation allowance	$ 1,567	$ 1,396
Undistributed Earnings of Foreign Subsidiaries	3,400
Undistributed earnings of foreign subsidiaries for which deferred taxes have not been provided	700
Gross unrecognized tax benefits that would reduce income tax expense and effective tax rate, if recognized	469	501	$ 453
Accrued interest and penalties related to unrecognized tax benefits	221	231	216
Additional accrued interest related to unrecognized tax benefits	22	68	25
Reductions in accrued interest as a result of audit settlements and other prior-year adjustments	32	54	21
Unrecognized tax benefits, reasonably possible reduction due to payments for or resolution of open tax matters	143
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	207	313	$ 255
International Theme Parks
Income Taxes [Line Items]
Valuation allowance	1,200	1,100
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest	$ 400	400
Tax Credit Carryforward, Description	indefinite carryforward period in France and Hong Kong and a five-year carryforward period in China
International Theme Parks | CHINA
Income Taxes [Line Items]
Tax Credit Carryforward, Period	5 years
Disneyland Paris
Income Taxes [Line Items]
Deferred Tax Assets, Adjustment		$ 399