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Note 3 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value (USD $)
In Millions, unless otherwise specified
Sep. 30, 2013
Sep. 03, 2013
Sep. 03, 2013
Successor [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2013
Successor [Member]
Sep. 03, 2013
Successor [Member]
Aug. 31, 2013
Successor [Member]
Note 3 - Fresh Start Accounting (Details) - Reconciliation of Enterprise Value to Estimated Reorganization Value [Line Items]            
Enterprise value $ 1,000       $ 1,000  
Plus: Cash and cash equivalents       844 898 898
Plus: Fair value of noncontrolling interests   10        
Plus: Fair value of non-debt liabilities     2,088      
Less: Fair value of pension and other postretirement obligations     533      
Reorganization value of Successor assets         $ 3,463