Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
12 Months Ended
Sep. 30, 2012
Sep. 25, 2011
Sep. 26, 2010
Deferred Tax Liabilities Not Recognized [Abstract]      
Unrecorded deferred tax liability related to United States federal and state income taxes and withholding taxes on undistributed earnings of certain non-United States subsidiaries $ 5,800,000,000    
Amount of undistributed earnings of certain non-United States subsidiaries indefinitely invested outside the United States 16,400,000,000    
Income Tax Examinations [Abstract]      
Decrease to tax provision as a result of income tax examination 10,000,000    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense [Abstract]      
Unrecognized tax benefits for tax positions that, if recognized, would impact the effective tax rate 86,000,000    
Cash amounts paid for income taxes, net of refunds received 1,300,000,000 2,100,000,000 671,000,000
Amount by which income tax expense would have been higher without Singapore tax incentives $ 193,000,000    
Amount by which basic and diluted EPS would have been lower without Singapore tax incentives $ 0.11