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Subsequent Events	9 Months Ended
Subsequent Events	Jul. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events We monitor significant events occurring after the balance sheet date and prior to the issuance of the financial statements to determine the impacts, if any, of events on the financial statements to be issued. All subsequent events of which we are aware were evaluated. For information on subsequent event disclosure items related to regulatory matters, stockholders' equity and equity method investments, see Note 3, Note 7 and Note 13, respectively, to the condensed consolidated financial statements in this Form 10-Q.