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Note 20 - Other Postretirement Benefits (Details) - Other Post Retirement Benefit Cost From Continuing Operations (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, 2012
Dec. 31, 2011
Dec. 31, 2013
Successor [Member]
Aug. 31, 2013
Predecessor [Member]
Dec. 31, 2012
Predecessor [Member]
Dec. 31, 2011
Predecessor [Member]
Note 20 - Other Postretirement Benefits (Details) - Other Post Retirement Benefit Cost From Continuing Operations [Line Items]              
Service cost           $ 1 $ 1
Interest cost       1 3 44 64
Amortization of:              
Prior service credit         (75) (83) (77)
Actuarial loss         3 26 32
Other postretirment benefit cost (income) before curtailments and settlements       1 (69) (12) 20
Curtailment gains 5   3     (9)  
Settlement gains   1 1     (228)  
Other postretirement benefit cost (income) from continuing operations       $ 1 $ (69) $ (249) $ 20