Stock-Based Compensation - Stock Options (Narrative) (Details) - Stock Options - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 13	$ 25	$ 18
Total grant date fair value of options vested	10	$ 9	$ 3
Unrecognized pre-tax stock-based compensation expense	$ (10)
Remaining weighted-average vesting period	1 year 4 months 24 days