Leases (Reported in Balance Sheet) (Details) - USD ($) $ in Millions	Aug. 01, 2021	Aug. 02, 2020
Operating Lease, Right-of-Use Asset	$ 235	$ 254
Other Assets [Member]
Operating Lease, Right-of-Use Asset	235	254
Accrued Liabilities [Member]
Operating Lease, Liability, Current	54	67
Other Liabilities [Member]
Operating Lease, Liability, Noncurrent	180	184
Property, Plant and Equipment [Member]
Finance Lease, Right-of-Use Asset	29	10
Short-term Debt [Member]
Finance Lease, Liability, Current	11	3
Long-term Debt [Member]
Finance Lease, Liability, Noncurrent	$ 19	$ 7

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

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- Definition

Amount, after accumulated amortization, of right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

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