Retirement and Post-Retirement Benefit Plans - Schedule of Defined Benefit Plans with Projected Benefit Obligations Exceeding Fair Value of Plan Assets (Details) - Defined Benefit Plans - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Aggregate fair value of plan assets	$ 0	$ 10,463
Aggregate projected benefit obligation	412	11,344
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Aggregate fair value of plan assets	988	998
Aggregate projected benefit obligation	$ 1,562	$ 1,620