v3.26.1
Net Income (Loss) Per Share (Computation of Basic and Diluted Net Income (Loss) Per Share) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Earnings Per Share [Abstract]        
Net income (loss) $ (177) $ 262 $ 589 $ 880
Weighted-average shares used to compute net income (loss) per share, basic (in shares) 801 665 729 659
Weighted-average effect of potentially dilutive securities:        
Convertible senior notes (in shares) 0 6 0 9
Warrants related to the issuance of convertible senior notes (in shares) 0 25 8 25
Employee equity incentive plans (in shares) 0 11 7 15
Weighted-average shares used to compute net income (loss) per share, diluted (in shares) 801 707 744 708
Net income (loss) per share, basic (in usd per share) $ (0.22) $ 0.39 $ 0.81 $ 1.33
Net income (loss) per share, diluted (in usd per share) $ (0.22) $ 0.37 $ 0.79 $ 1.24