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Restructuring - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2024
Restructuring Cost and Reserve [Line Items]        
Total expected plan cost $ 238   $ 238  
Restructuring $ 1 $ 0 14 $ 0
Severance, employee benefits and site closure costs        
Restructuring Cost and Reserve [Line Items]        
Restructuring     $ 14