Stock-based Compensation (Schedule Of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Jul. 30, 2023 USD ($) $ / shares shares
Share-Based Payment Arrangement [Abstract]
Beginning of year, Options | shares	1,297
Granted, Options | shares	0
Exercised, Options | shares	(464)
Terminated, Options | shares	0
End of year, Options | shares	833
Exercisable at end of period, Options | shares	833
Beginning of period, Weighted-Average Exercise Price | $ / shares	$ 46.04
Granted, Weighted-Average Exercise Price | $ / shares	0
Exercised, Weighted-Average Exercise Price | $ / shares	48.33
Terminated, Weighted-Average Exercise Price | $ / shares	0
End of period, Weighted-Average Exercise Price | $ / shares	44.77
Exercisable at end of period, Weighted-Average Exercise Price | $ / shares	$ 44.77
Outstanding at end of period, Weighted-Average Remaining Contractual Life (In years)	4 years 2 months 12 days
Exercisable at end of period, Weighted-Average Remaining Contractual Life (In years)	4 years 2 months 12 days
Outstanding at end of period, Aggregate Intrinsic Value | $	$ 4
Exercisable at end of period, Aggregate Intrinsic Value | $	$ 4