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Pensions And Other Postretirement Benefits Pensions and Other Postretirement Benefits (Amounts Recognized in Other Comprehensive Income) (Details) - USD ($)
$ in Millions
Oct. 03, 2015
Sep. 27, 2014
Funded Qualified Pension Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated other comprehensive (income)/loss, Actuarial loss $ 57 $ 39
Accumulated other comprehensive (income)/loss, Prior service cost/(credit) [1] 0 0
Total accumulated other comprehensive (income)/loss 57 39
Unfunded Non-Qualified Pension Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated other comprehensive (income)/loss, Actuarial loss 43 36
Accumulated other comprehensive (income)/loss, Prior service cost/(credit) [1] 0 0
Total accumulated other comprehensive (income)/loss 43 36
Other Postretirement Benefit Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated other comprehensive (income)/loss, Actuarial loss 0 0
Accumulated other comprehensive (income)/loss, Prior service cost/(credit) [1] (59) (2)
Total accumulated other comprehensive (income)/loss $ (59) $ (2)
[1] The change in prior service cost is primarily attributed to the plan amendments to the other postretirement benefits as noted within the change in benefit obligation with remainder of the change being immaterial.