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Goodwill and Other Intangible assets, Net Future Amortization Expense (Details) (USD $)
In Millions, unless otherwise specified
Oct. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months $ 15us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Assets, Amortization Expense, Year Two 12us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Assets, Amortization Expense, Year Three 11us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Assets, Amortization Expense, Year Four 7us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Assets, Amortization Expense, Year Five 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Finite-Lived Intangible Assets, Amortization Expense, after Year Five $ 8us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive