v3.26.3
Pension And Postretirement Benefits (Schedule of Change in Benefit Obligation) (Details) - USD ($)
$ in Millions
 12 Months Ended
Aug. 02, 2026
Aug. 03, 2025
Jul. 28, 2024
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement $ (70)    
Pension Plan, Defined Benefit [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation 1,214 $ 1,267  
Defined Benefit Plan, Service Cost 12 13 $ 13
Defined Benefit Plan, Interest Cost 55 61 65
Defined Benefit Plan, Benefit Obligation, Actuarial Loss (Gain) (26) (8)  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 0  
Defined Benefit Plan, Benefits Paid (106) (119)  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement (66) 0  
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits 38 0  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment (5) 0  
Defined Benefit Plan, Benefit Obligation, Business Combination 3 0  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change (1) 0  
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation (Gain) Loss (1) 0  
Defined Benefit Plan, Benefit Obligation 1,117 1,214 1,267
Other Postretirement Benefit Plan, Defined Benefit [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation 127 145  
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 6 6 8
Defined Benefit Plan, Benefit Obligation, Actuarial Loss (Gain) (4) (2)  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 (7)  
Defined Benefit Plan, Benefits Paid (14) (15)  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 0  
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits 0 0  
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment 0 0  
Defined Benefit Plan, Benefit Obligation, Business Combination 0 0  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change 0 0  
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation (Gain) Loss 0 0  
Defined Benefit Plan, Benefit Obligation $ 115 $ 127 $ 145