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Pensions And Other Postretirement Benefits (Reconciliation Of Changes In Plans' Benefit Obligations, Assets And Funded Status) (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 01, 2022
Oct. 02, 2021
Oct. 03, 2020
Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Plan Assets, Contributions by Employer $ 13 $ 15 $ 19
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Benefit Obligation 55 65 74
Defined Benefit Plan, Plan Assets, Amount 0 0 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan (55) (65)  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 0 0  
Defined Benefit Plan, Plan Assets, Contributions by Employer 4 3  
Defined Benefit Plan, Service Cost 1 2 2
Defined Benefit Plan, Interest Cost 1 1 1
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 (8)  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) (8) (1)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (4) (3)  
Defined Benefit Plan, Plan Assets, Benefits Paid (4) (3)  
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement 0 0  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 0  
Defined Benefit Plan, Funded Plan | Qualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Benefit Obligation 17 28 31
Defined Benefit Plan, Plan Assets, Amount 24 33 35
Defined Benefit Plan, Funded (Unfunded) Status of Plan 7 5  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) (9) 1  
Defined Benefit Plan, Plan Assets, Contributions by Employer 1 1  
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 1 0 14
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 0  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) (11) 0  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (1) (1)  
Defined Benefit Plan, Plan Assets, Benefits Paid (1) (1)  
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement 0 (3)  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 (2)  
Defined Benefit Plan, Unfunded Plan | Nonqualified Plan | Pension Plan [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Defined Benefit Plan, Benefit Obligation 166 220 238
Defined Benefit Plan, Plan Assets, Amount 0 0 0
Defined Benefit Plan, Funded (Unfunded) Status of Plan (166) (220)  
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) 0 0  
Defined Benefit Plan, Plan Assets, Contributions by Employer 13 14  
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 6 6 $ 8
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 0  
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) (47) (4)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (13) (12)  
Defined Benefit Plan, Benefit Obligation, Payment for Settlement   (2)  
Defined Benefit Plan, Plan Assets, Benefits Paid (13) (12)  
Defined Benefit Plan, Plan Assets, Payment for Settlement   (2)  
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement 0 0  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement $ 0 $ (6)