Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Significant Accounting Policies [Line Items]
Advertising Expense	$ 2,500,000,000	$ 2,800,000,000	$ 2,600,000,000
Internal-Use software costs capitalized, net of accumulated depreciation	$ 423,000,000	$ 486,000,000
Capitalized Software, Estimated Useful Life Minimum	3 years
Capitalized Software, Estimated Useful Life Maximum	10 years
Amortizable intangible assets, amortization period	40 years
Measurement of tax benefit, minimum likelihood of largest amount being realized upon ultimate settlement	50.00%
Maximum
Significant Accounting Policies [Line Items]
Percentage of ownership interest in VIE	50.00%
Amortizable intangible assets, amortization period	40 years