Retirement and Post-Retirement Benefit Plans (Details 4) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2015 USD ($) item	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)
Change in benefit obligation:
Settlement		$ 0	$ (225)	$ 0
U.S. Defined Benefit Plans
Change in fair value of plan assets:
Fair value—beginning of year		0	0
Transfer from Parent		0	0
Acquisition/divestiture/addition/deletion of plans(2)		0	0
Actual return on plan assets		0	0
Employer contributions		0	21
Participant contributions		0	0
Benefits paid		0	(21)
Settlement		0	0
Currency impact		0	0
Fair value—end of year	$ 0	0	0	0
Change in benefit obligation:
Projected benefit obligation—beginning of year		7	370
Merged into Parent's Shared plan		0	(365)
Transfer from Parent		0	7
Acquisition/divestiture/addition/deletion of plans(2)		0	0
Service cost		0	0	0
Interest cost		0	16	15
Participant contributions		0	0
Actuarial loss (gain)		0	0
Benefits paid		0	(21)
Plan amendments		0	0
Curtailment		0	0
Settlement		0	0
Special termination benefits		0	0
Currency impact		0	0
Projected benefit obligation—end of year	7	7	7	370
Funded status at end of year	(7)	(7)	(7)
Accumulated benefit obligation	$ 7	$ 7	$ 7
Number of unfunded non-qualified U.S. defined benefit plans transferred to Parent | item	3
Weighted average assumptions used to calculate the projected benefit obligations for Direct plans:
Discount rate	3.80%	3.20%	3.80%
Expected increase in compensation levels	2.00%	2.00%	2.00%
Net amounts recognized for the Direct plans in Combined and Consolidated Balance Sheets:
Noncurrent assets	$ 0	$ 0	$ 0
Current liabilities	(2)	(2)	(2)
Noncurrent liabilities	(5)	(5)	(5)
Funded status at end of year	(7)	(7)	(7)
Pretax net actuarial loss (gain) and prior service benefit recognized in accumulated other comprehensive loss for and prior service benefit recognized in Accumulated other comprehensive loss for the Direct defined benefit plans:
Net actuarial loss (gain)		0
Prior service benefit		0
Total recognized in accumulated other comprehensive loss		0
Net actuarial loss and prior service benefit for Direct plans that are expected to be amortized from Accumulated other comprehensive loss and recognized as components of net periodic benefit cost (credit):
Net actuarial loss (gain)		0
Prior service benefit		0
Total expected to be recognized in net periodic benefit cost (credit)		0
Direct defined benefit plans with projected benefit obligations exceeding the fair value of plan assets:
Aggregate fair value of plan assets	0	0	0
Aggregate projected benefit obligation	7	7	7
Direct defined benefit plans with accumulated benefit obligations exceeding the fair value of plan assets:
Aggregate fair value of plan assets	0	0	0
Aggregate accumulated benefit obligation	7	7	7
Non-U.S. Defined Benefit Plans
Change in fair value of plan assets:
Fair value—beginning of year		16,624	5,098
Transfer from Parent		0	11,667
Acquisition/divestiture/addition/deletion of plans(2)		138	(4)
Actual return on plan assets		2,104	512
Employer contributions		328	132
Participant contributions		41	7
Benefits paid		(518)	(273)
Settlement		(33)	(8)
Currency impact		(2,022)	(507)
Fair value—end of year	16,624	16,662	16,624	5,098
Change in benefit obligation:
Projected benefit obligation—beginning of year		19,439	7,335
Merged into Parent's Shared plan		0	0
Transfer from Parent		0	12,262
Acquisition/divestiture/addition/deletion of plans(2)		(20)	(3)
Service cost		254	121	74
Interest cost		549	337	283
Participant contributions		41	7
Actuarial loss (gain)		3,018	409
Benefits paid		(518)	(273)
Plan amendments		1	(82)
Curtailment		(18)	0
Settlement		(33)	(8)
Special termination benefits		25	18
Currency impact		(2,374)	(684)
Projected benefit obligation—end of year	19,439	20,364	19,439	7,335
Funded status at end of year	(2,815)	(3,702)	(2,815)
Accumulated benefit obligation	$ 18,706	$ 19,829	$ 18,706
Weighted average assumptions used to calculate the projected benefit obligations for Direct plans:
Discount rate	3.00%	2.00%	3.00%
Expected increase in compensation levels	2.50%	2.40%	2.50%
Net amounts recognized for the Direct plans in Combined and Consolidated Balance Sheets:
Noncurrent assets	$ 495	$ 378	$ 495
Current liabilities	(38)	(43)	(38)
Noncurrent liabilities	(3,272)	(4,037)	(3,272)
Funded status at end of year	(2,815)	(3,702)	(2,815)
Pretax net actuarial loss (gain) and prior service benefit recognized in accumulated other comprehensive loss for and prior service benefit recognized in Accumulated other comprehensive loss for the Direct defined benefit plans:
Net actuarial loss (gain)		5,800
Prior service benefit		(184)
Total recognized in accumulated other comprehensive loss		5,616
Net actuarial loss and prior service benefit for Direct plans that are expected to be amortized from Accumulated other comprehensive loss and recognized as components of net periodic benefit cost (credit):
Net actuarial loss (gain)		446
Prior service benefit		24
Total expected to be recognized in net periodic benefit cost (credit)		422
Direct defined benefit plans with projected benefit obligations exceeding the fair value of plan assets:
Aggregate fair value of plan assets	8,510	10,508	8,510
Aggregate projected benefit obligation	11,820	14,587	11,820
Direct defined benefit plans with accumulated benefit obligations exceeding the fair value of plan assets:
Aggregate fair value of plan assets	8,449	10,171	8,449
Aggregate accumulated benefit obligation	11,195	13,765	11,195
Post-Retirement Benefit Plans
Change in fair value of plan assets:
Fair value—beginning of year		40	0
Transfer from Parent		0	40
Acquisition/divestiture/addition/deletion of plans(2)		0	0
Actual return on plan assets		1	0
Employer contributions		3	1
Participant contributions		6	0
Benefits paid		(3)	(1)
Settlement		0	0
Currency impact		0	0
Fair value—end of year	40	47	40	0
Change in benefit obligation:
Projected benefit obligation—beginning of year		139	0
Merged into Parent's Shared plan		0	0
Transfer from Parent		0	150
Acquisition/divestiture/addition/deletion of plans(2)		0	0
Service cost		3	0	0
Interest cost		6	1	0
Participant contributions		6	0
Actuarial loss (gain)		6	(10)
Benefits paid		(3)	(1)
Plan amendments		0	0
Curtailment		0	0
Settlement		0	0
Special termination benefits		0	0
Currency impact		1	(1)
Projected benefit obligation—end of year	139	158	139	$ 0
Funded status at end of year	(99)	(111)	(99)
Accumulated benefit obligation	$ 0	$ 0	$ 0
Weighted average assumptions used to calculate the projected benefit obligations for Direct plans:
Discount rate	4.60%	4.20%	4.60%
Expected increase in compensation levels	0.00%	0.00%	0.00%
Net amounts recognized for the Direct plans in Combined and Consolidated Balance Sheets:
Noncurrent assets	$ 0	$ 0	$ 0
Current liabilities	(3)	(3)	(3)
Noncurrent liabilities	(96)	(108)	(96)
Funded status at end of year	$ (99)	(111)	$ (99)
Pretax net actuarial loss (gain) and prior service benefit recognized in accumulated other comprehensive loss for and prior service benefit recognized in Accumulated other comprehensive loss for the Direct defined benefit plans:
Net actuarial loss (gain)		(9)
Prior service benefit		0
Total recognized in accumulated other comprehensive loss		(9)
Net actuarial loss and prior service benefit for Direct plans that are expected to be amortized from Accumulated other comprehensive loss and recognized as components of net periodic benefit cost (credit):
Net actuarial loss (gain)		(3)
Prior service benefit		0
Total expected to be recognized in net periodic benefit cost (credit)		$ (3)