Accumulated Other Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions		12 Months Ended
		Aug. 01, 2021	Aug. 02, 2020		Jul. 28, 2019	Jul. 29, 2018
Beginning Balance		$ (10)
Other comprehensive income (loss), after tax		11	$ 189		$ (89)
Ending Balance		5	(10)
Accumulated Other Comprehensive Income Foreign Currency Translation Tax (Benefit) Expense		0	0		4	$ 6
Accumulated Other Comprehensive Income Cashflow Hedges Tax Benefit Expense		(1)	(1)		(2)	(4)
Accumulated Other Comprehensive Income Unamortized Pension And Post Retirement Tax (Benefit) Expense		1	2		8	$ 25
Accumulated Translation Adjustment [Member]
Beginning Balance	[1]	(10)	(218)		(154)
Other Comprehensive Income (Loss) Before Reclassifications Net Of Tax		16	(2)		(68)
Other Comprehensive Income Reclassifications Current Period Net of Tax		0	210	[2]	2
Other comprehensive income (loss), after tax		16	208		(66)
Ending Balance	[1]	6	(10)		(218)
Accumulated Translation Adjustment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance					2
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Beginning Balance	[3]	(7)	(9)		(4)
Other Comprehensive Income (Loss) Before Reclassifications Net Of Tax		(4)	2		(2)
Other Comprehensive Income Reclassifications Current Period Net of Tax		7	0	[2]	0
Other comprehensive income (loss), after tax		3	2		(2)
Ending Balance	[3]	(4)	(7)		(9)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance					(3)
Accumulated Defined Benefit Plans Adjustment [Member]
Beginning Balance	[4]	7	29		40
Other Comprehensive Income (Loss) Before Reclassifications Net Of Tax		0	0		0
Other Comprehensive Income Reclassifications Current Period Net of Tax		(4)	(22)	[2]	(21)
Other comprehensive income (loss), after tax		(4)	(22)		(21)
Ending Balance	[4]	3	7		29
Accumulated Defined Benefit Plans Adjustment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance					10
Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance		(10)	(198)		(118)
Other Comprehensive Income (Loss) Before Reclassifications Net Of Tax		12	0		(70)
Other Comprehensive Income Reclassifications Current Period Net of Tax		3	188	[2]	(19)
Other comprehensive income (loss), after tax		15	188		(89)
Ending Balance		$ 5	$ (10)		(198)
Accumulated Other Comprehensive Income (Loss) [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Beginning Balance					$ 9

[1] Included no tax as of August 1, 2021, and August 2, 2020, and tax expense of $4 as of July 28, 2019, and $6 as of July 29, 2018.

[2] Reflects the reclassification from sale of businesses. See Note 3 for additional information.

[3] Included a tax benefit of $1 as of August 1, 2021, and as of August 2, 2020, $2 as of July 28, 2019, and $4 as of July 29, 2018.

[4] Included a tax expense of $1 as of August 1, 2021, $2 as of August 2, 2020, $8 as of July 28, 2019, and $25 as of July 29, 2018.