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Note 15 - Share-based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Note 15 - Share-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 11	$ 19	$ 36	$ 47
Proceeds from Stock Options Exercised			99	98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 46	60
Years of Historical Volatility Included in Most Recent Volatility			15 years
Employee Stock Option [Member]
Note 15 - Share-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	2	9	$ 13	20
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	9		$ 9
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 292 days
Proceeds from Stock Options Exercised			$ 99	98
Restricted Stock [Member]
Note 15 - Share-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	9	$ 10	23	$ 27
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 30		$ 30
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			1 year 328 days
Minimum [Member]
Note 15 - 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	7 years 73 days	7 years 73 days	7 years 73 days	7 years 73 days
Minimum [Member] | Restricted Stock [Member]
Note 15 - Share-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			1 year
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			1 year
Maximum [Member]
Note 15 - 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 73 days	7 years 73 days	7 years 73 days
Maximum [Member] | Restricted Stock [Member]
Note 15 - Share-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			10 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			10 years

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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