v3.26.1
NET INCOME PER SHARE NET INCOME PER SHARE (Computation) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Earnings Per Share [Abstract]        
Net income $ 349 $ 257 $ 630 $ 426
Basic weighted-average shares 171 172 171 173
Potential common shares 2 1 2 1
Diluted weighted-average shares 173 173 173 174
Net income per share - basic $ 2.04 $ 1.49 $ 3.68 $ 2.47
Net income per share - diluted $ 2.02 $ 1.49 $ 3.64 $ 2.45