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Note 20 - Other Postretirement Benefits (Details) - Changes in Benefit Obligations Recognized in Other Comprehensive (Loss) (USD $)
In Millions, unless otherwise specified
 8 Months Ended 12 Months Ended 4 Months Ended 8 Months Ended 12 Months Ended
Aug. 31, 2013
Dec. 31, 2011
Dec. 31, 2013
Successor [Member]
Other Postretirement Benefit Plans [Member]
Aug. 31, 2013
Predecessor [Member]
Other Postretirement Benefit Plans [Member]
Dec. 31, 2012
Predecessor [Member]
Other Postretirement Benefit Plans [Member]
Dec. 31, 2012
Predecessor [Member]
Note 20 - Other Postretirement Benefits (Details) - Changes in Benefit Obligations Recognized in Other Comprehensive (Loss) [Line Items]            
Newly established gain (loss)     $ 2 $ 50 $ (117)  
Newly established prior service credit         460  
Amortization of:            
Prior service credit       (75) (83)  
Net actuarial loss       3 26  
Prior service credit recognized due to curtailment 5 3     (9) (9)
Net loss recognized in expense due to settlement         510  
Total income (loss) recognized in Other comprehensive income (loss) before fresh start accounting     2 (22) 787  
Effect of application of fresh start accounting       $ (1,023)