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Note 19 - Financial Instruments (Detail) - Financial Instruments Not Recorded at Fair Value (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Marketable securities    
Long-term held-to-maturity $ 23  
23  
Debt    
Short-term debt 862 699
874  
Long-term debt 370 740
303  
Debt subject to compromise 2,746 2,716
86  
Fair Value, Inputs, Level 1 [Member]
   
Marketable securities    
Long-term held-to-maturity 23  
23  
Fair Value, Inputs, Level 2 [Member] | Debt Subject to Compromise [Member]
   
Debt    
Debt subject to compromise 683  
Fair Value, Inputs, Level 2 [Member]
   
Debt    
Short-term debt 862  
874  
Long-term debt 370  
303  
86  
Debt Subject to Compromise [Member]
   
Debt    
Debt subject to compromise $ 683