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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. 02, 2021
Oct. 03, 2020
Sep. 28, 2019
Pension Plan [Member]      
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Employer contributions $ 15 $ 19 $ 13
Other Postretirement Benefits Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 74 77  
Service cost 2 2 2
Interest cost 1 1 1
Plan Amendments (8) (6)  
Actuarial (gain) loss (1) 4  
Benefits paid (3) (4)  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 0  
Benefit obligation at end of year 65 74 77
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contributions 3 4  
Benefits paid (3) (4)  
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement 0 0  
Fair value of plan assets at end of year 0 0 0
Funded status (65) (74)  
Defined Benefit Plan, Funded Plan [Member] | Qualified Plan [Member] | Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 31 1,478  
Service cost 0 0 0
Interest cost 0 14 56
Plan Amendments 0 0  
Actuarial (gain) loss 0 0  
Benefits paid (1) (38)  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement (2) (1,423)  
Benefit obligation at end of year 28 31 1,478
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 35 1,477  
Actual return on plan assets 1 (14)  
Employer contributions 1 7  
Benefits paid (1) (38)  
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement (3) (1,397)  
Fair value of plan assets at end of year 33 35 1,477
Funded status 5 4  
Defined Benefit Plan, Unfunded Plan [Member] | Nonqualified Plan [Member] | Pension Plan [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 238 239  
Service cost 0 0 1
Interest cost 6 8 9
Plan Amendments 0 0  
Actuarial (gain) loss (4) 5  
Benefits paid (12) (14)  
Defined Benefit Plan, Benefit Obligation, Payment for Settlement (2)    
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement (6) 0  
Benefit obligation at end of year 220 238 239
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contributions 14 12  
Benefits paid (12) (12)  
Defined Benefit Plan, Plan Assets, Payment for Settlement (2)    
Defined Benefit Plan, Plan Assets, (Increase) Decrease for Settlement 0 0  
Fair value of plan assets at end of year 0 0 $ 0
Funded status $ (220) $ (238)