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Investments in and advances to non-consolidated affiliates (Tables) (NC2 Global LLC [Member])
3 Months Ended
Jan. 31, 2012
NC2 Global LLC [Member]
 
Schedule of Equity Method Investments [Line Items]  
Summarized financial information for NC2 Global, LLC
Presented below is summarized financial information representing 100% of NC2, which was considered a significant non-consolidated affiliate during the three months ended January 31, 2011, prior to increasing the equity interest in September 2011. Balance sheet information for NC2 was insignificant to our Consolidated Balance Sheet as of January 31, 2011.
(in millions)
Three Months Ended January 31, 2011
Net revenue
$
49

Net expenses
67

Loss before tax expense
(18
)
Net loss
(18
)