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Note 9 - Retirement Plans and Other Postretirement Benefits (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]        
Restructuring Charges $ 6 $ 9 $ 29 $ 42
Pension Plan [Member]        
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]        
Defined Benefit Plan, Contributions by Employer     12  
Other Postretirement Benefit Plan [Member]        
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]        
Defined Benefit Plan, Benefits Paid     4  
Special Termination Benefits [Member]        
Note 9 - Retirement Plans and Other Postretirement Benefits (Details) [Line Items]        
Restructuring Charges     $ 6