Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011
Income Taxes [Line Items]
Undistributed earnings of foreign subsidiaries for which deferred taxes have not been provided	$ 1,500,000,000
Potential incremental federal tax applicable to earnings assuming repatriation of permanently reinvested earnings	315,000,000
Gross unrecognized tax benefits that would reduce income tax expense and effective tax rate, if recognized	449,000,000	452,000,000	480,000,000
Accrued interest and penalties related to unrecognized tax benefits	211,000,000	209,000,000	175,000,000
Additional accrued interest related to unrecognized tax benefits	42,000,000	25,000,000	17,000,000
Reductions in accrued interest as a result of audit settlements and other prior-year adjustments	55,000,000	12,000,000	13,000,000
Unrecognized tax benefits, reasonably possible reduction due to payments for or resolution of open tax matters	434,000,000
Income tax benefits attributable to equity-based compensation transactions (less than) exceeded amounts recorded based on grant date fair value (charged) credited to shareholders' equity	204,000,000	120,000,000	109,000,000
International Theme Parks
Income Taxes [Line Items]
Valuation allowance	$ 632,000,000
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