v3.25.2
Pension And Postretirement Benefits (Schedule of Change in Benefit Obligation) (Details) - USD ($)
$ in Millions
 12 Months Ended
Aug. 03, 2025
Jul. 28, 2024
Jul. 30, 2023
Pension Plan, Defined Benefit [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation $ 1,267 $ 1,257  
Defined Benefit Plan, Service Cost 13 13 $ 13
Defined Benefit Plan, Interest Cost 61 65 73
Defined Benefit Plan, Benefit Obligation, Actuarial Loss (Gain) (8) 38  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment 0 0  
Defined Benefit Plan, Benefits Paid (119) (101)  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change 0 (1)  
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation (Gain) Loss 0 (4)  
Defined Benefit Plan, Benefit Obligation 1,214 1,267 1,257
Other Postretirement Benefit Plan, Defined Benefit [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Defined Benefit Plan, Benefit Obligation 145 153  
Defined Benefit Plan, Service Cost 0 0 0
Defined Benefit Plan, Interest Cost 6 8 7
Defined Benefit Plan, Benefit Obligation, Actuarial Loss (Gain) (2) 0  
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment (7) 0  
Defined Benefit Plan, Benefits Paid (15) (16)  
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 $ 127 $ 145 $ 153