XML 72 R60.htm IDEA: XBRL DOCUMENT v3.23.1
Fair Value Measurements (Assets Measured on Recurring Basis Unobservable Input Reconciliation (Details) - USD ($)
$ in Millions
9 Months Ended
Apr. 30, 2023
May 01, 2022
Jul. 31, 2022
Aug. 01, 2021
Fair Value Disclosures [Abstract]        
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs $ 4 $ 8 $ 4 $ 1
Fair Value, Level 3 investment gain (Loss) Included in Earnings 4 18    
Fair Value, Level 3 Investment, Settlements $ (4) $ (11)