Retirement and Post-Retirement Benefit Plans (Details 6) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 31, 2016	Oct. 31, 2015
Future Contributions and Funding Policy
Net pension liability transfer threshold		$ 570
Non-U.S. Defined Benefit Plans
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		16,624	$ 5,098
Transfer from Parent		0	11,667
Actual return on plan assets:
Fair value—end of year		$ 16,662	$ 16,624
2016 Target Allocation		100.00%
Plan Assets		100.00%	100.00%
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2016		$ 348
Transfer		0	$ 12,262
Initial funding payments		328	132
Future benefits payable for the retirement and post-retirement plans
2017		527
2019		505
2020		542
2021		579
2020		608
Next five fiscal years to October 31, 2026		3,515
Non-U.S. Defined Benefit Plans | Equity Securities Non-U.S.
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		2,386
Actual return on plan assets:
Fair value—end of year		1,333	2,386
Non-U.S. Defined Benefit Plans | Private Equity
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		69
Actual return on plan assets:
Fair value—end of year		$ 72	$ 69
Plan Assets		22.50%	19.80%
Non-U.S. Defined Benefit Plans | Hedge Funds
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		$ 320
Actual return on plan assets:
Fair value—end of year		235	$ 320
Non-U.S. Defined Benefit Plans | Real Estate Funds
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		1,051
Actual return on plan assets:
Fair value—end of year		$ 791	$ 1,051
Plan Assets		6.30%	7.00%
Non-U.S. Defined Benefit Plans | Insurance Group Annuity Contracts
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		$ 117
Actual return on plan assets:
Fair value—end of year		101	$ 117
Non-U.S. Defined Benefit Plans | Other
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		109
Actual return on plan assets:
Fair value—end of year		$ 262	$ 109
Non-U.S. Defined Benefit Plans | Public equity securities
Actual return on plan assets:
Plan Assets		38.30%	43.40%
Non-U.S. Defined Benefit Plans | Equity-related investments
Actual return on plan assets:
2016 Target Allocation		64.70%
Plan Assets		67.10%	70.20%
Non-U.S. Defined Benefit Plans | Debt securities
Actual return on plan assets:
2016 Target Allocation		34.50%
Plan Assets		26.50%	27.60%
Non-U.S. Defined Benefit Plans | Cash and cash equivalents
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		$ 372
Actual return on plan assets:
Fair value—end of year		$ 1,061	$ 372
2016 Target Allocation		0.80%
Plan Assets		6.40%	2.20%
Post-Retirement Benefit Plans
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		$ 40	$ 0
Transfer from Parent		0	40
Actual return on plan assets:
Fair value—end of year		$ 47	$ 40
2016 Target Allocation		100.00%
Plan Assets		100.00%	100.00%
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2016		$ 3
Transfer		0	$ 150
Initial funding payments		3	$ 1
Future benefits payable for the retirement and post-retirement plans
2017		4
2019		5
2020		6
2021		7
2020		8
Next five fiscal years to October 31, 2026		$ 54
Post-Retirement Benefit Plans | Private Equity
Actual return on plan assets:
Plan Assets		0.00%	0.00%
Post-Retirement Benefit Plans | Real Estate Funds
Actual return on plan assets:
Plan Assets		0.00%	0.00%
Post-Retirement Benefit Plans | Public equity securities
Actual return on plan assets:
Plan Assets		0.00%	0.00%
Post-Retirement Benefit Plans | Equity-related investments
Actual return on plan assets:
2016 Target Allocation		0.00%
Plan Assets		0.00%	0.00%
Post-Retirement Benefit Plans | Debt securities
Actual return on plan assets:
2016 Target Allocation		90.00%
Plan Assets		90.20%	97.20%
Post-Retirement Benefit Plans | Cash and cash equivalents
Actual return on plan assets:
2016 Target Allocation		10.00%
Plan Assets		9.80%	2.80%
U.S. Defined Benefit Plans
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		$ 0	$ 0
Transfer from Parent		0	0
Actual return on plan assets:
Fair value—end of year		0	0
Future Contributions and Funding Policy
Transfer		0	7
Initial funding payments		0	21
Future benefits payable for the retirement and post-retirement plans
2017		2
2019		0
2020		1
2021		0
2020		1
Next five fiscal years to October 31, 2026		2
U.S. non-qualified plan participants
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2016		2
Level 3 | Non-U.S. Defined Benefit Plans
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		1,047	369
Transfer from Parent			407
Actual return on plan assets:
Relating to assets held at the reporting date		(119)	21
Relating to assets sold during the period		1	5
Purchases, sales, and settlements		67	61
Transfers in and/or out of Level 3		(265)	184
Fair value—end of year		731	1,047
Level 3 | Non-U.S. Defined Benefit Plans | Equity Securities Non-U.S.
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		68	0
Transfer from Parent			81
Actual return on plan assets:
Relating to assets held at the reporting date		16	(13)
Relating to assets sold during the period		0	0
Purchases, sales, and settlements		0	0
Transfers in and/or out of Level 3		0	0
Fair value—end of year		84	68
Level 3 | Non-U.S. Defined Benefit Plans | Private Equity
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		68	28
Transfer from Parent			19
Actual return on plan assets:
Relating to assets held at the reporting date		(1)	(1)
Relating to assets sold during the period		4	5
Purchases, sales, and settlements		(3)	10
Transfers in and/or out of Level 3		0	7
Fair value—end of year		68	68
Level 3 | Non-U.S. Defined Benefit Plans | Hedge Funds
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		236	0
Transfer from Parent			192
Actual return on plan assets:
Relating to assets held at the reporting date		(35)	7
Relating to assets sold during the period		0	0
Purchases, sales, and settlements		(11)	36
Transfers in and/or out of Level 3		(103)	1
Fair value—end of year		87	236
Level 3 | Non-U.S. Defined Benefit Plans | Real Estate Funds
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		571	336
Transfer from Parent			23
Actual return on plan assets:
Relating to assets held at the reporting date		(96)	23
Relating to assets sold during the period		0	0
Purchases, sales, and settlements		2	15
Transfers in and/or out of Level 3		(170)	174
Fair value—end of year		307	571
Level 3 | Non-U.S. Defined Benefit Plans | Insurance Group Annuity Contracts
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		69	5
Transfer from Parent			58
Actual return on plan assets:
Relating to assets held at the reporting date		(2)	4
Relating to assets sold during the period		(3)	0
Purchases, sales, and settlements		(3)	0
Transfers in and/or out of Level 3		2	2
Fair value—end of year		63	69
Level 3 | Non-U.S. Defined Benefit Plans | Other
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		35	0
Transfer from Parent			34
Actual return on plan assets:
Relating to assets held at the reporting date		(1)	1
Relating to assets sold during the period		0	0
Purchases, sales, and settlements		82	0
Transfers in and/or out of Level 3		6	0
Fair value—end of year		122	35
Level 3 | Non-U.S. Defined Benefit Plans | Cash and cash equivalents
Changes in fair value measurements of Level 3 investments
Fair value—beginning of year		0
Actual return on plan assets:
Fair value—end of year		0	$ 0
Minimum | Non-U.S. Defined Benefit Plans
Future Contributions and Funding Policy
Transfer		2,000
Maximum | Non-U.S. Defined Benefit Plans
Future Contributions and Funding Policy
Transfer		$ 3,000
Subsequent Event | Non-U.S. Defined Benefit Plans
Future Contributions and Funding Policy
Initial funding payments	$ 1,900