Retirement and Post-Retirement Benefit Plans - Schedule of Pension and Post-Retirement Benefit (Credit) Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
U.S. Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	$ 0	$ 0
Interest cost	117	136
Expected return on plan assets	(169)	(183)
Amortization and deferrals:
Actuarial loss (gain)	18	14
Prior service benefit	0	0
Net periodic benefit (credit) cost	(34)	(33)
Settlement loss	0	1
Total periodic benefit (credit) cost	(34)	(32)
Non-U.S. Defined Benefit Plans
Retirement and post-retirement benefit plans
Service cost	12	12
Interest cost	4	6
Expected return on plan assets	(8)	(12)
Amortization and deferrals:
Actuarial loss (gain)	10	6
Prior service benefit	(1)	(1)
Net periodic benefit (credit) cost	17	11
Settlement loss	0	0
Total periodic benefit (credit) cost	17	11
Post- Retirement Benefit Plans
Retirement and post-retirement benefit plans
Service cost	0	0
Interest cost	4	5
Expected return on plan assets	(6)	(8)
Amortization and deferrals:
Actuarial loss (gain)	(2)	(3)
Prior service benefit	(5)	(4)
Net periodic benefit (credit) cost	(9)	(10)
Settlement loss	0	0
Total periodic benefit (credit) cost	$ (9)	$ (10)