Stockholders' Deficit - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024
Stockholders' Equity Note [Abstract]
Repurchases of common stock (in shares)	3.1	3.5	5.8	20.5
Payment in connection with repurchases of shares	$ 100	$ 100	$ 200	$ 600
Shares settled (in shares)	0.3	0.3	0.3	0.3
Share repurchase authorization remaining	$ 9,100		$ 9,100