Retirement and Post-Retirement Benefit Plans (Details 3) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Post-Retirement Benefit Plans
Net benefit (credit) cost
Service cost	$ 1	$ 3	$ 3
Interest cost	7	6	6
Expected return on plan assets	(1)	(2)	(2)
Amortization and deferrals:
Actuarial loss (gain)	(3)	(2)	(3)
Prior service benefit	0	0	0
Net periodic benefit cost	4	5	4
Curtailment gain	0	0	0
Settlement loss	0	0	0
Special termination benefits	0	0	0
Plan credit allocation	0	(1)	(1)
Net benefit cost (credit) from continuing operations	4	4	3
Discontinued operations	0	1	1
Total net benefit (credit) cost	$ 4	$ 5	$ 4
Weighted average assumptions used to calculate net benefit (credit) cost
Discount rate used to determine benefit obligation	4.50%	4.20%	4.60%
Discount rate used to determine service cost	3.70%	3.70%	4.60%
Discount rate used to determine interest cost	4.20%	3.80%	4.60%
Expected increase in compensation levels	0.00%	0.00%	0.00%
Expected long-term return on plan assets	2.60%	3.10%	4.00%
Defined Benefit Plans | Non-U.S. Plans
Net benefit (credit) cost
Service cost	$ 105	$ 139	$ 199
Interest cost	225	213	317
Expected return on plan assets	(567)	(548)	(667)
Amortization and deferrals:
Actuarial loss (gain)	211	264	220
Prior service benefit	(17)	(17)	(19)
Net periodic benefit cost	(43)	51	50
Curtailment gain	(1)	(1)	0
Settlement loss	20	15	4
Special termination benefits	6	5	5
Plan credit allocation	0	(14)	(15)
Net benefit cost (credit) from continuing operations	(18)	56	44
Discontinued operations	0	81	92
Total net benefit (credit) cost	$ (18)	$ 137	$ 136
Weighted average assumptions used to calculate net benefit (credit) cost
Discount rate used to determine benefit obligation	2.00%	2.00%	2.70%
Discount rate used to determine service cost	2.40%	2.00%	2.70%
Discount rate used to determine interest cost	1.70%	1.80%	2.70%
Expected increase in compensation levels	2.30%	2.40%	2.30%
Expected long-term return on plan assets	4.40%	4.40%	5.80%