Note 19 - Share-based Compensation (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares	Dec. 31, 2013 USD ($) $ / shares
Note 19 - Share-based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) \| shares	72
Stock Compensation Plans Number of Years Taken to Calculate Forfeiture Rate	15 years
Allocated Share-based Compensation Expense	$ 46	$ 58	$ 54
In Money Options	$ 13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) \| $ / shares	$ 7.99	$ 8.29	$ 5.02
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 36	$ 16	$ 29
Proceeds from Stock Options Exercised	102	116	85
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 48	69	55
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense			0
Age of Retirement Eligibility	55
Years of Historical Volatility Included in Most Recent Volatility	15 years
Employee Stock Option [Member]
Note 19 - Share-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	$ 14	22	25
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	$ 7
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 255 days
Proceeds from Stock Options Exercised	$ 102
Restricted Stock [Member]
Note 19 - Share-based Compensation (Details) [Line Items]
Allocated Share-based Compensation Expense	32	36	29
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 27
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years 109 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 32	$ 32	$ 29
Minimum [Member]
Note 19 - 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	5 years 292 days
Minimum [Member] \| Restricted Stock [Member]
Note 19 - 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 19 - 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
Maximum [Member] \| Restricted Stock [Member]
Note 19 - 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

The age of retirement eligibility, which is 55.

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Years of historical volatility included in the calculation of the forfeiture rate and then it is adjusted if actual forfeitures differ significantly from the original estimates.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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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 total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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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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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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