Stock-based Compensation (Schedule Of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Aug. 01, 2021 USD ($) $ / shares shares
Share-based Payment Arrangement [Abstract]
Beginning of year, Options | shares	1,423
Granted, Options | shares	0
Exercised, Options | shares	(51)
Terminated, Options | shares	0
End of year, Options | shares	1,372
Exercisable at end of period, Options | shares	1,079
Beginning of period, Weighted-Average Exercise Price | $ / shares	$ 45.42
Granted, Weighted-Average Exercise Price | $ / shares	0
Exercised, Weighted-Average Exercise Price | $ / shares	40.41
Terminated, Weighted-Average Exercise Price | $ / shares	0
End of period, Weighted-Average Exercise Price | $ / shares	45.61
Exercisable at end of period, Weighted-Average Exercise Price | $ / shares	$ 48.36
Outstanding at end of period, Weighted-Average Remaining Contractual Life (In years)	5 years 10 months 24 days
Exercisable at end of period, Weighted-Average Remaining Contractual Life (In years)	5 years 6 months
Outstanding at end of period, Aggregate Intrinsic Value | $	$ 4
Exercisable at end of period, Aggregate Intrinsic Value | $	$ 2