Note 13 - Employee Retirement Plans (Details) - Obligations and Funded Status Schedule (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in benefit obligation
Benefit obligation at beginning of year	$ 3,300	$ 3,630
Service cost	82us-gaap_DefinedBenefitPlanServiceCost	70us-gaap_DefinedBenefitPlanServiceCost	62us-gaap_DefinedBenefitPlanServiceCost
Interest cost	160us-gaap_DefinedBenefitPlanInterestCost	131us-gaap_DefinedBenefitPlanInterestCost	154us-gaap_DefinedBenefitPlanInterestCost
Fair value of plan assets at beginning of year	2,896	2,975
Actual gain on plan assets	355	71
Employer contributions	147	20
Plan participants’ contributions	1	1
Acquisitions	97
Acquisitions	103
Amendments	25
Actuarial loss (gain)	394	(362)
Other	(3)us-gaap_DefinedBenefitPlanOtherChanges	2us-gaap_DefinedBenefitPlanOtherChanges
Benefits paid	(207)us-gaap_DefinedBenefitPlanBenefitsPaid	(177)us-gaap_DefinedBenefitPlanBenefitsPaid
Foreign currency translation	(26)	6
Fair value of plan assets	3,263	2,896	2,975
Benefit obligations	(3,809)	(3,300)	(3,630)
Funded status of plans	(546)	(404)
Foreign currency translation	(46)	5
Benefit obligation at end of year	3,809	3,300	3,630
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	47	23
Current liability	(41)	(15)
Noncurrent liability	(552)	(412)
Recognized liability	(546)	(404)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	308	132
Prior service cost (credit)	41	21
Amount recognized at end of year	349	153
United States Pension Plan of US Entity [Member]
Change in benefit obligation
Benefit obligation at beginning of year	2,844	3,198
Service cost	55	60	53
Interest cost	137	115	138
Fair value of plan assets at beginning of year	2,596	2,684
Actual gain on plan assets	287	65
Employer contributions	97	10
Plan participants’ contributions	1	1
Amendments	25
Actuarial loss (gain)	327	(368)
Other		2
Benefits paid	(167)	(164)
Fair value of plan assets	2,814	2,596	2,684
Benefit obligations	(3,222)	(2,844)	(3,198)
Funded status of plans	(408)	(248)
Benefit obligation at end of year	3,222	2,844	3,198
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset		15
Current liability	(30)	(10)
Noncurrent liability	(378)	(253)
Recognized liability	(408)	(248)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	278	83
Prior service cost (credit)	44	27
Amount recognized at end of year	322	110
Foreign Pension Plan [Member]
Change in benefit obligation
Benefit obligation at beginning of year	456	432
Service cost	27	10	9
Interest cost	23	16	16
Fair value of plan assets at beginning of year	300	291
Actual gain on plan assets	68	6
Employer contributions	50	10
Acquisitions	97
Acquisitions	103
Actuarial loss (gain)	67	6
Other	(3)
Benefits paid	(40)	(13)
Foreign currency translation	(26)	6
Fair value of plan assets	449	300	291
Benefit obligations	(587)	(456)	(432)
Funded status of plans	(138)	(156)
Foreign currency translation	(46)	5
Benefit obligation at end of year	587	456	432
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	47	8
Current liability	(11)	(5)
Noncurrent liability	(174)	(159)
Recognized liability	(138)	(156)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	30	49
Prior service cost (credit)	(3)	(6)
Amount recognized at end of year	$ 27	$ 43

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The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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Amount related to the pretax cost of benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation, which has not yet been recognized as components of net periodic benefit cost.

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

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The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

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The amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan.

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The amount of increase in the benefit obligation attributed to business combinations.

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The amount of increase in the plan assets attributed to a business combination.

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The increase in the fair value of plan assets from contributions made by the employer.

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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Amount of gain (loss) from foreign currency exchange rate changes for benefit obligation for plans of a foreign operation whose functional currency is not the reporting currency.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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Changes in the defined benefit obligation, not otherwise separately disclosed in the financial statements.

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The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

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This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

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