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Note 27: Condensed Combined Debtor-In-Possesion Financial Information (Detail) - Debtors' Statement of Operations (Parentheticals) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Interest expense - contractual interest (in Dollars) $ 158 $ 155 $ 148
Debtor in Possession [Member] | Contractual Interest [Member]
     
Interest expense - contractual interest (in Dollars) 193    
Debtor in Possession [Member]
     
Interest expense - contractual interest (in Dollars) $ 148