| **Goodwill - Intangible Assets Not Subject to Amortization (Details) (USD $)In Millions, unless otherwise specified** | Oct. 31, 2013 | Oct. 31, 2012 |
|-----------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Indefinite-lived Intangible Assets [Line Items]**                                                                   |          |          |
| Intangible assets not subject to amortization                                                                         | $ 46          | $ 55          |
| Franchise Rights [Member]                                                                                             |          |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                   |          |          |
| Intangible assets not subject to amortization                                                                         | 1             | 5             |
| Trademarks [Member]                                                                                                   |          |          |
| **Indefinite-lived Intangible Assets [Line Items]**                                                                   |          |          |
| Intangible assets not subject to amortization                                                                         | $ 45          | $ 50          |

| X                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275
+ Details**Name:**us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |