Postretirement Benefits - Narrative (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		12 Months Ended				12 Months Ended														3 Months Ended			18 Months Ended	3 Months Ended					12 Months Ended
	Oct. 31, 2013	Oct. 31, 2011	Oct. 31, 2013	Oct. 31, 2012 employees	Oct. 31, 2011	Oct. 31, 2013 United States Postretirement Benefit Plan of US Entity, Defined Benefit [Member]	Oct. 31, 2014 Pension Plan, Defined Benefit [Member]	Oct. 31, 2013 Pension Plan, Defined Benefit [Member]	Oct. 31, 2012 Pension Plan, Defined Benefit [Member]	Oct. 31, 2011 Pension Plan, Defined Benefit [Member]	Oct. 31, 2014 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2013 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2012 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2011 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2013 Early Retiree Reinsurance Program [Member]	Oct. 31, 2012 Early Retiree Reinsurance Program [Member]	Oct. 31, 2011 Early Retiree Reinsurance Program [Member]	Oct. 31, 2013 Unfunded pension plan [Member]	Oct. 31, 2012 Unfunded pension plan [Member]	Oct. 31, 1993 Other Pension Plan, Postretirement or Supplemental Plans, Defined Benefit [Member]	Jul. 31, 2011 Chatham [Member] Facility Closing [Member] Pension Plan, Defined Benefit [Member]	Jul. 31, 2011 Chatham [Member] Facility Closing [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]	Jul. 31, 2011 Location Fort Wayne [Member] Restructuring Charges [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2012 Truck [Member] Custom Products Operations Union City and Coburg [Member] Pension And Other Postretirement Contractual Termination Benefits [Member]	Oct. 31, 2011 Effect Of Remeasurement On Plan [Member]	Oct. 31, 2013 Accounts Receivable [Member] Level 3 Pension Plan, Defined Benefit [Member]	Oct. 31, 2012 Accounts Receivable [Member] Level 3 Pension Plan, Defined Benefit [Member]	Oct. 31, 2013 Accounts Receivable [Member] Level 3 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2012 Accounts Receivable [Member] Level 3 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2013 Equity Method Investments [Member]	Oct. 31, 2013 Fixed Income Investments [Member]	Oct. 31, 2013 Other Investments [Member]	Oct. 31, 2013 Cash [Member]	Oct. 31, 2013 US Large Cap [Member]	Oct. 31, 2013 US Large Cap [Member] Pension Plan, Defined Benefit [Member]	Oct. 31, 2012 US Large Cap [Member] Pension Plan, Defined Benefit [Member]	Oct. 31, 2013 US Large Cap [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2012 US Large Cap [Member] Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2013 US Large Cap [Member] Level 3 Pension Plan, Defined Benefit [Member]	Oct. 31, 2012 US Large Cap [Member] Level 3 Pension Plan, Defined Benefit [Member]	Oct. 31, 2013 US Large Cap [Member] Level 3 Other Postretirement Benefit Plan, Defined Benefit [Member]	Oct. 31, 2012 US Large Cap [Member] Level 3 Other Postretirement Benefit Plan, Defined Benefit [Member]
Compensation and Retirement Disclosure [Abstract]
Defined Benefit Plan, Fair Value of Plan Assets								$ 2,519,000,000	$ 2,411,000,000	$ 2,392,000,000		$ 447,000,000	$ 437,000,000	$ 463,000,000												$ 8,000,000	$ 8,000,000	$ 1,000,000	$ 1,000,000						$ 207,000,000	$ 463,000,000	$ 28,000,000	$ 82,000,000	$ 0	$ 0	$ 0	$ 0
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations																														55.00%	30.00%	10.00%	5.00%	15.00%
Pension and other postretirment charges due to reduction in workfroce				7,000,000
Accumulated benefit obligation for pension benefits	3,900,000,000		3,900,000,000	4,400,000,000
Deferred taxes related to the Company's postretirement benfit plans						539,000,000
Amounts contributed to meet regulatory funding requirements								165,000,000	157,000,000			3,000,000	19,000,000
Amounts expected to be contributed to pension plans in 2014							180,000,000				2,000,000
Benefits paid								333,000,000	328,000,000			188,000,000	187,000,000					14,000,000	13,000,000
Benefits paid from Company assets												60,000,000	75,000,000
Curtailments	4,000,000							33,000,000	(4,000,000)			0	0
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	33,000,000
Pension curtailment gain																					8,000,000
Contractual termination benefits								0	2,000,000	38,000,000		0	(2,000,000)	6,000,000							35,000,000
Other post-employment benefit charges																						13,000,000	5,000,000	2,000,000
Increase in postretirement benefit expense		15,000,000	(58,000,000)	(79,000,000)	9,000,000
Prior service cost (benefit)					(302,000,000)			(1,000,000)	(1,000,000)	0		0	0	302,000,000
Amounts recognized in our accumulated other comprehensive loss consist of:								(585,000,000)	357,000,000	267,000,000		(200,000,000)	(88,000,000)	893,000,000											200,000,000
Effect of re-measurement increased postretirement benefits expense		9,000,000
Plan participants' contributions								0	0			28,000,000	20,000,000		0	3,000,000	10,000,000
Number of employees and beneficiaries included in Company's retiree population				38,000
Defined benefit plan, weighted average rate of increase in in per capita cost percent of benefit obligation				9.20%									90.00%
Postretirement benefit obligation projection for 2014													8.25%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate													5.00%
Defined Contribution Plan, Cost Recognized			$ 27,000,000	$ 41,000,000	$ 33,000,000
Contribution to the Supplemental Trust shares																				25.5