Retirement and Post-Retirement Benefit Plans - Schedule of Pension and Post-Retirement Benefit (Credit) Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Post-Retirement Benefit Plans
Retirement and post-retirement benefit plans
Service cost	$ 1	$ 1	$ 1	$ 1
Interest cost	4	2	11	6
Expected return on plan assets	(4)	(2)	(10)	(6)
Amortization and deferrals:
Actuarial loss (gain)	(4)	(4)	(12)	(12)
Prior service cost (credit)	(2)	(2)	(8)	(8)
Net periodic benefit (credit) cost	(5)	(5)	(18)	(19)
Settlement gain	0	0	0	0
Special termination benefit cost			34	0
Total periodic benefit (credit) cost	(5)	(5)	16	(19)
U.S. | Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	0	0	0	0
Interest cost	54	41	163	121
Expected return on plan assets	(65)	(72)	(194)	(221)
Amortization and deferrals:
Actuarial loss (gain)	4	1	13	4
Prior service cost (credit)	0	0	0	0
Net periodic benefit (credit) cost	(7)	(30)	(18)	(96)
Settlement gain	0	0	0	0
Special termination benefit cost			105	0
Total periodic benefit (credit) cost	(7)	(30)	87	(96)
Non-U.S. | Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	10	14	30	42
Interest cost	10	5	30	16
Expected return on plan assets	(13)	(12)	(39)	(37)
Amortization and deferrals:
Actuarial loss (gain)	1	9	3	28
Prior service cost (credit)	1	1	4	4
Net periodic benefit (credit) cost	9	17	28	53
Settlement gain	0	(1)	0	(1)
Special termination benefit cost			0	0
Total periodic benefit (credit) cost	$ 9	$ 16	$ 28	$ 52