v2.4.1.9
SHARE-BASED COMPENSATION Allocated Share-based compensation expense (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Share-based compensation expense $ 29us-gaap_AllocatedShareBasedCompensationExpense $ 17us-gaap_AllocatedShareBasedCompensationExpense
share based compensation expense- Inaugral Stock Units [Line Items] 14keys_SharebasedcompensationexpenseInaugralStockUnits  
Windfall tax benefit realized 3us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense 0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Share-based compensation capitalized within inventory 2keys_Sharebasedcompensationcapitalizedwithininventory 1keys_Sharebasedcompensationcapitalizedwithininventory
Cost of Products and Services [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Share-based compensation expense 4us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
4us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
Research and Development Expense [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Share-based compensation expense 4us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
3us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
Selling, General and Administrative Expenses [Member]    
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]    
Share-based compensation expense $ 21us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
$ 10us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember