Note 8 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	Jul. 29, 2023	Jul. 30, 2022
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	$ 5	$ 6

Amount of unamortized debt discount (premium) and debt issuance costs.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
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-Name Accounting Standards Codification
-Topic 835
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant