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GOODWILL AND OTHER INTANGIBLE ASSETS Finite-Lived Assets Future Amortization Expense (Details) (USD $)
In Millions, unless otherwise specified
Apr. 30, 2015
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
Future amortization expense for remainder of 2015 $ 75us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
Future amortization expense for 2016 132us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Future amortization expense for 2017 92us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Future amortization expense for 2018 61us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Future amortization expense for 2019 46us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Future amortization expense for 2020 36us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Future amortization thereafter $ 55us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive