Retirement and Post-Retirement Benefit Plans (Details 6) (USD $) In Millions, unless otherwise specified	12 Months Ended										12 Months Ended				12 Months Ended						12 Months Ended				12 Months Ended				12 Months Ended										12 Months Ended									12 Months Ended			12 Months Ended						12 Months Ended					12 Months Ended						12 Months Ended						12 Months Ended				12 Months Ended				12 Months Ended			12 Months Ended		12 Months Ended			12 Months Ended				12 Months Ended								12 Months Ended											12 Months Ended
	Oct. 31, 2013 U.S. Defined Benefit Plans	Oct. 31, 2012 U.S. Defined Benefit Plans	Oct. 31, 2013 U.S. Defined Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2012 U.S. Defined Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Equity securities	Oct. 31, 2012 U.S. Defined Benefit Plans Equity securities	Oct. 31, 2013 U.S. Defined Benefit Plans U.S. equity securities	Oct. 31, 2012 U.S. Defined Benefit Plans U.S. equity securities	Oct. 31, 2013 U.S. Defined Benefit Plans Non U.S. equity securities	Oct. 31, 2012 U.S. Defined Benefit Plans Non U.S. equity securities	Oct. 31, 2013 U.S. Defined Benefit Plans Debt securities	Oct. 31, 2012 U.S. Defined Benefit Plans Debt securities	Oct. 31, 2013 U.S. Defined Benefit Plans Corporate debt	Oct. 31, 2012 U.S. Defined Benefit Plans Corporate debt	Oct. 31, 2013 U.S. Defined Benefit Plans Corporate debt Fair Value Measured Using Level 3	Oct. 31, 2012 U.S. Defined Benefit Plans Corporate debt Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Government debt securities	Oct. 31, 2012 U.S. Defined Benefit Plans Government debt securities	Oct. 31, 2013 U.S. Defined Benefit Plans Private Equity, alternative Investments	Oct. 31, 2012 U.S. Defined Benefit Plans Private Equity, alternative Investments	Oct. 31, 2013 U.S. Defined Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2012 U.S. Defined Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Hybrids, alternative investments	Oct. 31, 2012 U.S. Defined Benefit Plans Hybrids, alternative investments	Oct. 31, 2012 U.S. Defined Benefit Plans Hybrids, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Hybrids, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Hedge Funds, alternative investments	Oct. 31, 2012 U.S. Defined Benefit Plans Hedge Funds, alternative investments	Oct. 31, 2013 U.S. Defined Benefit Plans Hedge Funds, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2012 U.S. Defined Benefit Plans Hedge Funds, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2013 U.S. Defined Benefit Plans Public Equities	Oct. 31, 2012 U.S. Defined Benefit Plans Public Equities	Oct. 31, 2013 U.S. Defined Benefit Plans Real Estate Funds	Oct. 31, 2012 U.S. Defined Benefit Plans Real Estate Funds	Oct. 31, 2013 U.S. Defined Benefit Plans Cash and Cash Equivalents	Oct. 31, 2012 U.S. Defined Benefit Plans Cash and Cash Equivalents	Oct. 31, 2013 U.S. Defined Benefit Plans Other	Oct. 31, 2012 U.S. Defined Benefit Plans Other	Oct. 31, 2013 U.S. non-qualified plan participants	Oct. 31, 2013 Non-U.S. Defined Benefit Plans	Oct. 31, 2012 Non-U.S. Defined Benefit Plans	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Equity securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Equity securities	Oct. 31, 2013 Non-U.S. Defined Benefit Plans U.S. equity securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans U.S. equity securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans U.S. equity securities Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Non U.S. equity securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Non U.S. equity securities	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Non U.S. equity securities Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Non U.S. equity securities Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Debt securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Debt securities	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Corporate debt	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Corporate debt	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Corporate debt Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Government debt securities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Government debt securities	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Private Equity, alternative Investments	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Private Equity, alternative Investments	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Hybrids, alternative investments	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Hybrids, alternative investments	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Hedge Funds, alternative investments	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Hedge Funds, alternative investments	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Hedge Funds, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Hedge Funds, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Public Equities	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Public Equities	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Real Estate Funds	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Real Estate Funds	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Real Estate Funds Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Real Estate Funds Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Insurance Group Annuity Contracts	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Insurance Group Annuity Contracts	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Insurance Group Annuity Contracts Fair Value Measured Using Level 3	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Insurance Group Annuity Contracts Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Cash and Cash Equivalents	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Cash and Cash Equivalents	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Cash and Cash Equivalents Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Other	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Other	Oct. 31, 2012 Non-U.S. Defined Benefit Plans Other Fair Value Measured Using Level 3	Oct. 31, 2013 Non-U.S. Defined Benefit Plans Other Fair Value Measured Using Level 3	Oct. 31, 2013 Post-Retirement Benefit Plans	Oct. 31, 2012 Post-Retirement Benefit Plans	Oct. 31, 2011 Post-Retirement Benefit Plans	Oct. 31, 2013 Post-Retirement Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2012 Post-Retirement Benefit Plans Fair Value Measured Using Level 3	Oct. 31, 2013 Post-Retirement Benefit Plans Equity securities	Oct. 31, 2012 Post-Retirement Benefit Plans Equity securities	Oct. 31, 2013 Post-Retirement Benefit Plans Debt securities	Oct. 31, 2012 Post-Retirement Benefit Plans Debt securities	Oct. 31, 2013 Post-Retirement Benefit Plans Corporate debt	Oct. 31, 2012 Post-Retirement Benefit Plans Corporate debt	Oct. 31, 2013 Post-Retirement Benefit Plans Government debt securities	Oct. 31, 2012 Post-Retirement Benefit Plans Government debt securities	Oct. 31, 2013 Post-Retirement Benefit Plans Private Equity, alternative Investments	Oct. 31, 2012 Post-Retirement Benefit Plans Private Equity, alternative Investments	Oct. 31, 2013 Post-Retirement Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2012 Post-Retirement Benefit Plans Private Equity, alternative Investments Fair Value Measured Using Level 3	Oct. 31, 2013 Post-Retirement Benefit Plans Hybrids, alternative investments	Oct. 31, 2012 Post-Retirement Benefit Plans Hybrids, alternative investments	Oct. 31, 2013 Post-Retirement Benefit Plans Hybrids, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2012 Post-Retirement Benefit Plans Hybrids, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2011 Post-Retirement Benefit Plans Hybrids, alternative investments Fair Value Measured Using Level 3	Oct. 31, 2013 Post-Retirement Benefit Plans Public Equities	Oct. 31, 2012 Post-Retirement Benefit Plans Public Equities	Oct. 31, 2013 Post-Retirement Benefit Plans Real Estate Funds	Oct. 31, 2012 Post-Retirement Benefit Plans Real Estate Funds	Oct. 31, 2013 Post-Retirement Benefit Plans Cash and Cash Equivalents	Oct. 31, 2012 Post-Retirement Benefit Plans Cash and Cash Equivalents	Oct. 31, 2013 Post-Retirement Benefit Plans Other	Oct. 31, 2012 Post-Retirement Benefit Plans Other
Changes in fair value measurements of Level 3 investments
Fair value - beginning of year	$ 11,536	$ 10,662	$ 1,368	$ 1,360			$ 1,711	$ 1,150	$ 1,274	$ 866			$ 3,028	$ 3,443	$ 1		$ 1,849	$ 3,037	$ 1,250	$ 1,303	$ 1,300	$ 1,356	$ 2	$ 2	$ 4	$ 2	$ 113	$ 65	$ 65						$ 73	$ 42	$ (57)	$ (379)		$ 14,021	$ 13,180	$ 614	$ 656			$ 2,487	$ 1,649	$ 30	$ 4,806	$ 4,175	$ 76				$ 3,347	$ 2,878	$ 3	$ 1,751	$ 1,653	$ 50	$ 23	$ 21	$ 20	$ 1,223	$ 1,089	$ 430	$ 529	$ 233	$ 300			$ 1,032	$ 820	$ 194	$ 199	$ 131	$ 148	$ 88	$ 89	$ 444		$ (4)	$ 174	$ 613	$ 19	$ 2	$ 395		$ 394	$ 236	$ 228					$ 17	$ 17	$ 22	$ 22	$ 234	$ 235	$ 235	$ 227	$ 1	$ 1	$ 1	$ 1	$ 1					$ 2		$ (2)	$ (4)
Actual return on plan assets:
Relating to assets still held at the reporting date			4	(68)																	(9)	(67)			(1)				13													20	(85)					(2)			1						(1)					8	(1)						(76)					16	(5)			(5)	1						(1)					5	13											5	13
Relating to assets sold during the period			143	104																	143	103			1																	11																										11																						21	3											21	3
Purchases, sales, and settlements (net)			(149)	(28)												1					(184)	(92)			(2)				35	65												92	55														(2)					19	16					(40)						115	43			(2)	(2)											(27)	(8)											(27)	(8)
Settlements	(33)	(31)																																						(96)	(193)
Transfers in and/or out of Level 3			(1)												(1)																												(12)					(28)				76											(14)						9						(43)							4			(16)
Fair value - end of year	10,866	11,536	1,365	1,368			1,711	1,150	1,274	866			3,028	3,443		1	1,849	3,037	1,250	1,303	1,250	1,300	2	2	2	2	113	65	113	65					73	42	(57)	(379)		16,083	14,021	737	614			2,487	1,649		4,806	4,175	77	76			3,347	2,878		1,751	1,653	50	23	48	21	1,223	1,089	430	529	204	233			1,032	820	325	194	131	148	81	88	652			174	613	2	2	396		394	235	236					17	17	22	22	234	235	234	235	1	1	1	1	1					3		(2)	(4)
Plan assets target allocation (as a percent)	100.00%				55.00%						45.00%																													100.00%				64.00%									35.20%																											0.80%							100.00%					68.00%		28.00%																			4.00%
Plan asset actual allocations (as a percent)	100.00%	100.00%			49.30%	32.30%					48.20%	61.50%							12.60%	11.90%											37.20%	23.70%	(0.50%)	(3.30%)	2.50%	6.20%				100.00%	100.00%			63.40%	63.40%								32.50%	33.40%						7.90%	11.70%									48.00%	41.50%	7.50%	10.20%							4.10%	3.20%						100.00%	100.00%				68.60%	67.30%	29.00%	27.90%					59.20%	59.60%								9.50%	8.60%	(0.10%)	(0.90%)	2.40%	4.80%
Future Contributions and Funding Policy
Expected contribution to defined benefit plans in fiscal 2014																																							33	617																																															109
Future benefits payable for the retirement and post-retirement plans
2014	694																																							549																																															146
2015	553																																							538																																															76
2016	573																																							546																																															70
2017	610																																							596																																															67
2018	653																																							636																																															65
Next five fiscal years to October 31, 2023	$ 3,681																																							$ 3,960																																															$ 286