Annual report pursuant to Section 13 and 15(d)

Income Taxes Unrecognized Tax Benefits (Details)

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Income Taxes Unrecognized Tax Benefits (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 30, 2012
Income Tax Uncertainties [Abstract]      
Unrecognized Tax Benefits that Would Impact Effective Tax Rate $ 85    
Interest expense related to uncertain tax positions 0 0 0
Changes in the Amount of Unrecognized Tax Benefits [Roll Forward]      
Beginning balance of unrecognized tax benefits 221 86 96
Additions based on prior year tax positions 1 1 0
Reductions for prior year tax positions and lapse in statute of limitations (67) 0 (18)
Additions for current year tax positions 5 145 10
Settlements with taxing authorities (73) (11) (2)
Ending balance of unrecognized tax benefits 87 221 86
Amount of accrued interest and penalties $ 0 $ 0