Litigation and Contingencies (Detail)	0 Months Ended			1 Months Ended		0 Months Ended								12 Months Ended	72 Months Ended	1 Months Ended	12 Months Ended		9 Months Ended		0 Months Ended								3 Months Ended	12 Months Ended
	Dec. 23, 2004	Oct. 31, 2014 USD ($)	Dec. 14, 2010 Fair Labor Standards Act Litigation item	Oct. 31, 2012 State of South Carolina Department of Social Services Contract Dispute USD ($)	Nov. 30, 2012 State of South Carolina Department of Social Services Contract Dispute Minimum USD ($)	May 10, 2010 India Directorate of Revenue Intelligence Proceedings USD ($)	Apr. 29, 2010 India Directorate of Revenue Intelligence Proceedings USD ($)	Jan. 24, 2013 Bangalore Commissioner of Customs USD ($)	Jan. 24, 2013 Bangalore Commissioner of Customs USD ($)	Dec. 11, 2012 Bangalore Commissioner of Customs USD ($)	Apr. 21, 2012 Bangalore Commissioner of Customs USD ($)	Apr. 20, 2012 Bangalore Commissioner of Customs USD ($)	Apr. 11, 2012 Bangalore Commissioner of Customs USD ($)	Oct. 31, 2014 Russia GPO and Other FCPA Investigations USD ($)	Oct. 31, 2006 Russia GPO and Other FCPA Investigations EUR (€)	Jul. 31, 2011 ECT Proceedings	Oct. 31, 2008 ECT Proceedings item	Oct. 31, 2007 ECT Proceedings item	Jul. 31, 2013 ECT Proceedings Minimum	Jul. 31, 2013 ECT Proceedings Maximum	Dec. 06, 2012 Autonomy-Related Legal Matters item	Aug. 26, 2013 Autonomy-Related Legal Matters item	Jul. 30, 2013 Autonomy-Related Legal Matters item	Jul. 26, 2013 Autonomy-Related Legal Matters item	Feb. 06, 2013 Autonomy-Related Legal Matters item	Jan. 22, 2013 Autonomy-Related Legal Matters item	Nov. 30, 2012 Autonomy-Related Legal Matters item	Oct. 31, 2012 Autonomy-Related Legal Matters item	Oct. 31, 2012 Autonomy-Related Legal Matters Software USD ($)	Oct. 31, 2014 Stockholder Litigation USD ($)
Copyright Levies
Levy assessed on a specific vendor on personal computers sold since March 2001 in Germany (euros per unit)	12
Litigation and Contingencies
Copyright levies payable on sales of MFDs in Belgium		$ 0
Number of job codes			20
Aggregate damages sought				275,000,000		370,000,000
Amount of payment to be made for past-due invoices by plaintiff					12,000,000
Loss contingency deposit to prevent interruption of business							16,000,000
Duties and penalties under show cause notices												17,000,000	386,000,000
Amount deposited under show cause notice prior to order												7,000,000	9,000,000
Additional amount deposited against products-related show cause notice										10,000,000
Additional amount deposited against parts-related show cause notice											3,000,000
Additional amount deposited against product order								24,000,000	24,000,000
Transaction of former subsidiary under investigation															35,000,000
ETC Proceedings, period to suspend right to bid and contract																5 years
Number of ECT contracts related to alleged improprieties																	3	3
Length of sanctions																			2 years	5 years
Impairment of goodwill and intangible assets																													8,800,000,000
Number of consolidated putative class action security lawsuits filed																											2
Number of consolidated lawsuits filed																							7
Number of investigating agencies																									3
Number of lawsuits alleging insider trading filed																												1
Number of consolidated ERISA lawsuits filed																					3
Additional breach of fiduciary duties lawsuits filed																						2		2
Number of actions other than claims asserted																										3
Amount payable to U.S. government agencies														77,000,000
Amount agreed to pay into settlement fund																														57,000,000
Amount paid to SEC														$ 31,000,000