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Note 3 - Fresh Start Accounting (Details) - Goodwill (Successor [Member], USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Sep. 03, 2013
Successor [Member]
   
Goodwill [Line Items]    
Reorganization value of Successor assets $ 3,410 $ 3,463
Less: Fair value of Successor assets (excluding goodwill)   3,375
Reorganization value of Successor assets in excess of fair value - Successor goodwill $ 88 $ 88