Stockholders' Deficit - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Stockholders' Equity Note [Abstract]
Repurchases of common stock (in shares)	5.5	17.0	11.4	37.5
Payment in connection with repurchases of shares	$ 200	$ 600	$ 350	$ 1,200
Shares settled (in shares)	0.3	0.2	0.3	0.2
Share repurchase authorization remaining	$ 8,900		$ 8,900