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Fair Value Measurements Fair Value Measurements (Assets Measured On Recurring Basis Unobservable Input Reconciliation) (Details) - USD ($) $ in Millions | 12 Months Ended
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Aug. 03, 2025 | Jul. 28, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs, Beginning Balance | $ 5 | $ 2
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of products sold | Cost of products sold
Fair Value, Level 3 investment Gain (Loss) Included in Earnings | $ (3) | $ 13
Fair Value, Level 3 Settlements | (3) | (10)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs, Ending Balance | $ (1) | $ 5

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