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Note 28 - Quarterly Sales and Earnings Data (Unaudited) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Dec. 31, 2015
Dec. 31, 2014
Quarterly Sales And Earnings Data [Line Items]            
Licenses Revenue       $ 51    
Increase Decrease in Earnings from Continuing Operations $ 16   $ (16)      
Foreign Currency Transaction Gain (Loss), before Tax   $ (2) $ (16)   $ 2 $ 16
Change in U.S. vacation benefits $ 16          
Licensing Revenue [Member]            
Quarterly Sales And Earnings Data [Line Items]            
Increase Decrease in Earnings from Continuing Operations       $ 51