Note 6 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Years ended December 31,
	2015		2014		2013
U.S. companies	$	426	$	2,384	$	1,274
Non-U.S. companies		1,060		1,184		1,199
Income before income taxes	$	1,486	$	3,568	$	2,473

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Years ended December 31,
	2015		2014		2013
Current:
Federal	$	40	$	38	$	3
State and municipal		20		32		12
Foreign		33		414		308
Deferred:
Federal		144		411		112
State and municipal		30		(9)		50
Foreign		(120)		210		27
Provision for income taxes	$	147	$	1,096	$	512

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Years ended December 31,
	2015		2014		2013
Statutory U.S. income tax rate	35.0%		35.0%		35.0%
State income tax (benefit), net of federal effect	0.1		4.9	(9)	0.6
Tax holidays (1)	(0.5)		(0.4)		(1.2)
Investment and other tax credits (2)	(1.7)		(0.3)		(2.0)
Rate difference on foreign earnings	(19.8)	(11)	(8.3)		(8.1)	(4)
Uncertain tax positions	4.3	(10)	(0.1)		0.2
Equity earnings impact (3)	(5.4)		(2.0)		(6.6)
Valuation allowances	(4.2)	(7)	0.8	(6)	3.1	(5)
Other items, net	2.1		1.1	(8)	(0.3)
Effective income tax (benefit) rate	9.9%		30.7%		20.7%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2015		2014
Loss and tax credit carryforwards	$	1,151	$	1,235
Other assets		69		69
Asset impairments and restructuring reserves		153		170
Postretirement medical and life benefits		276		312
Other accrued liabilities		265		246
Other employee benefits		505		473
Gross deferred tax assets		2,419		2,505
Valuation allowance		(238)		(298)
Total deferred tax assets		2,181		2,207
Intangible and other assets		(181)		(152)
Fixed assets		(284)		(299)
Total deferred tax liabilities		(465)		(451)
Net deferred tax assets	$	1,716	$	1,756

Schedule of Net Deferred Tax Assets [Table Text Block]

	December 31,
	2015		2014
Current deferred tax assets			$	248
Non-current deferred tax assets	$	2,056		1,889
Current deferred tax liabilities				(5)
Non-current deferred tax liabilities		(340)		(376)
Net deferred tax assets	$	1,716	$	1,756

Summary of Tax Credit Carryforwards [Table Text Block]

			Expiration
	Amount		2016-2020		2021-2025		2026-2035		Indefinite
Net operating losses	$	406	$	127	$	63	$	3	$	213
Tax credits		745		414		58		237		36
Totals as of December 31, 2015	$	1,151	$	541	$	121	$	240	$	249

Summary of Income Tax Contingencies [Table Text Block]

	2015		2014
Balance at January 1	$	10	$	15
Additions based on tax positions related to the current year
Additions for tax positions of prior years		245		5
Reductions for tax positions of prior years		(1)
Settlements and lapse of statute of limitations		(1)		(10)
Balance at December 31	$	253	$	10