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Pensions And Other Postretirement Benefits (Reconciliation Of Change In Fair Value Measurement Of Defined Benefit Plans' Consolidated Assets Using Significant Unobservable Inputs) (Details)
$ in Millions
 12 Months Ended
Oct. 03, 2015
USD ($)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance $ 1,650
Ending balance 1,576
Mortgage Backed Securities [Member]  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance 7
Insurance Contract [Member]  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance 15
Ending balance 14
Level 3 [Member]  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance 22 [1]
Assets still held at reporting date 0
Assets sold during the period 0
Purchases, sales and settlements, net (8)
Transfers in and/or out of Level 3 0
Ending balance 14 [1]
Level 3 [Member] | Mortgage Backed Securities [Member]  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance 7 [1]
Assets still held at reporting date 0
Assets sold during the period 0
Purchases, sales and settlements, net (7)
Transfers in and/or out of Level 3 0
Ending balance 0
Level 3 [Member] | Insurance Contract [Member]  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]  
Beginning balance 15 [1]
Assets still held at reporting date 0
Assets sold during the period 0
Purchases, sales and settlements, net (1)
Transfers in and/or out of Level 3 0
Ending balance $ 14 [1]
[1] We classify certain mortgage-backed, asset-backed and insurance contracts as Level 3 as there is limited activity or less observable inputs into valuation models, including current interest rates and estimated prepayment, default and recovery rates on the underlying portfolio or structured investment vehicle. The insurance contracts are valued using the plan’s own assumptions about the assumptions market participants would use in pricing the assets based on the best information available, such as investment manager pricing. Significant changes to assumptions or unobservable inputs in the valuation of our Level 3 instruments would not have a significant impact to our consolidated financial statements.