Stockholders' Equity Stockholders' Equity (Details)	12 Months Ended
Oct. 31, 2015
Equity [Abstract]
Stockholders' Equity Note, Derivative Transactions Connected with Contingently Convertible Securities	In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions with certain financial institutions with respect to its common stock. See Note 8, “Borrowings,” of the Notes to Consolidated Financial Statements for further discussion.

Information regarding derivative transactions entered into in connection with the issuance of contingently convertible securities that may be useful in explaining the potential impact of the contingently convertible securities. This information may include the terms of the derivative transaction (including settlement terms), how the transactions relate to the contingently convertible securities, and the number of shares underlying the derivatives.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

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