Retirement and Post-Retirement Benefit Plans - Schedule of Pension and Post-Retirement Benefit (Credit) Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Post-Retirement Benefit Plans
Retirement and post-retirement benefit plans
Service cost	$ 0	$ 0
Interest cost	2	2
Expected return on plan assets	(2)	(6)
Amortization and deferrals:
Actuarial loss (gain)	(4)	(4)
Prior service cost (credit)	(3)	(3)
Net periodic benefit (credit) cost	(7)	(11)
Settlement loss	0	0
Total benefit (credit) cost	(7)	(11)
U.S. | Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	0	0
Interest cost	40	76
Expected return on plan assets	(74)	(127)
Amortization and deferrals:
Actuarial loss (gain)	1	15
Prior service cost (credit)	0	0
Net periodic benefit (credit) cost	(33)	(36)
Settlement loss	0	1
Total benefit (credit) cost	(33)	(35)
Non-U.S. | Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	14	17
Interest cost	6	5
Expected return on plan assets	(13)	(12)
Amortization and deferrals:
Actuarial loss (gain)	10	13
Prior service cost (credit)	2	0
Net periodic benefit (credit) cost	19	23
Settlement loss	0	0
Total benefit (credit) cost	$ 19	$ 23