v3.26.1
Net Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Oct. 31, 2025
Numerator:          
Net earnings (loss) attributable to common stockholders - Basic $ 595 $ (1,079) $ 1,018 $ (481)  
Plus: 7.625% Series C mandatory convertible preferred stock dividends 29 29 58 58  
Net earnings (loss) - Diluted $ 624 $ (1,079) $ 1,018 $ (481)  
Denominator:          
Weighted-average shares used to compute basic net EPS (in shares) 1,335 1,322 1,335 1,319  
Dilutive effect of 7.625% Series C mandatory convertible preferred stock (in shares) 76 0 0 0  
Dilutive effect of employee stock plans (in shares) 21 0 21 0  
Weighted-average shares used to compute diluted net EPS (in shares) 1,432 1,322 1,356 1,319  
Net EPS:          
Basic (in dollars per share) $ 0.45 $ (0.82) $ 0.76 $ (0.36)  
Diluted (in dollars per share) $ 0.44 $ (0.82) $ 0.75 $ (0.36)  
Employee stock plans (in shares) 9 49 7 51  
7.625% Series C mandatory convertible preferred stock (in shares) 0 87 76 76  
Total anti-dilutive weighted-average stock (in shares) [1] 9 136 83 127  
Convertible Preferred Stock          
Net EPS:          
Preferred stock dividend rate (as a percent) 7.625%   7.625%   7.625%
[1] The Company excludes shares potentially issuable under employee stock plans and Preferred Stock that could dilute basic net EPS in the future from the calculation of diluted net EPS, as their effect, if included, would have been anti-dilutive for the periods presented.