Leases - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024
Leases [Abstract]
Cash paid for amount included in the measurement of lease liabilities	$ 256	$ 233
Right-of-use assets obtained in exchange of lease liabilities	$ 452	$ 411
Weighted-average remaining lease term in years	4 years 8 months 12 days	4 years 1 month 6 days
Weighted-average discount rate	6.90%	6.50%