Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Leases [Abstract]
Cash paid for amount included in the measurement of lease liabilities	$ 231	$ 233
Right-of-use assets obtained in exchange of lease liabilities	$ 312	$ 363
Weighted-average remaining lease term in years	4 years 6 months	5 years
Weighted-average discount rate	6.10%	5.20%