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Note 17 - Share-based Compensation (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Note 17 - Share-based Compensation (Details) [Line Items]        
Share-based Compensation $ 14 $ 16 $ 25 $ 40
Maximum Term for Non-Qualified and Incentive Stock Options     10 years  
Proceeds from Stock Options Exercised     39 19
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value     30 20
Employee Stock Option [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 33   33  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 6 months  
Allocated Share-based Compensation Expense 6 9 11 21
Restricted Stock [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 35   35  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 292 days  
Allocated Share-based Compensation Expense 8 7 14 17
Incentive Stock Plans Vest Over a Period, Minimum     1 year  
Incentive Stock Plans Vest Over a Period, Maximum     10 years  
Restricted Stock [Member] | Minimum [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term     1 year  
Restricted Stock [Member] | Maximum [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term     10 years  
Performance Shares [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense       $ 2
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years  
Minimum [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Stock Options Exercisable Period from Date of Grant     1 year  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 5 years 292 days 5 years 255 days 5 years 292 days 5 years 255 days
Maximum [Member]
       
Note 17 - Share-based Compensation (Details) [Line Items]        
Stock Options Exercisable Period from Date of Grant     5 years  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term 7 years 73 days 7 years 36 days 7 years 73 days 7 years 36 days