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Pensions And Other Postretirement Benefits (Components Of Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans Recognized In The Consolidated Statements Of Income) (Details) - USD ($)
$ in Millions
 12 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 03, 2020
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]   Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Service Cost $ 1 $ 2 $ 2
Defined Benefit Plan, Interest Cost 1 1 1
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 0 0 0
Amortization of prior service credit 4 (2) (6)
Defined Benefit Plan, Amortization of Gain (Loss) (8) 0 4
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0 (34) 0
Net Periodic Benefit Cost (Credit), Excluding Service Cost (2) (33) 1
Defined Benefit Plan, Funded Plan | Qualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 1 0 14
Defined Benefit Plan, Expected Return (Loss) on Plan Assets (1) 0 (17)
Amortization of prior service credit 0 0 0
Defined Benefit Plan, Amortization of Gain (Loss) 0 0 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0 0 (112)
Net Periodic Benefit Cost (Credit), Excluding Service Cost 0 0 (115)
Defined Benefit Plan, Unfunded Plan | Nonqualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 6 6 8
Defined Benefit Plan, Expected Return (Loss) on Plan Assets 0 0 0
Amortization of prior service credit 1 1 1
Defined Benefit Plan, Amortization of Gain (Loss) 3 4 3
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0 0 0
Net Periodic Benefit Cost (Credit), Excluding Service Cost $ 10 $ 11 $ 12