| **Summary of Significant Accounting Policies Consolidated Balance Sheet (Details) (USD $)In Millions** | Jul. 31, 2011 | Oct. 31, 2010 |
|--------------------------------------------------------------------------------------------------------|---------------|---------------|
| **New Accounting Pronouncements or Change in Accounting Principle [Line Items]**                       | Â             | Â             |
| Other current liabilities                                                                              | $ 1,119       | $ 1,130       |
| Accumulated deficit                                                                                    | (410)         | (1,878)       |
| As Computed Under the Ratable Method [Member]                                                          | Â             | Â             |
| **New Accounting Pronouncements or Change in Accounting Principle [Line Items]**                       | Â             | Â             |
| Other current liabilities                                                                              | 1,141         | Â             |
| Accumulated deficit                                                                                    | (432)         | Â             |
| Effect of Change [Member]                                                                              | Â             | Â             |
| **New Accounting Pronouncements or Change in Accounting Principle [Line Items]**                       | Â             | Â             |
| Other current liabilities                                                                              | (22)          | Â             |
| Accumulated deficit                                                                                    | $ 22          | Â             |

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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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| - Definition
Aggregate carrying amount, as of the balance sheet date, of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed in the balance sheet.  Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3
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