Note 17 - Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Balance		$ (1,811,000)
Balance		(1,676,000)		$ (1,811,000)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	[1]	(1,171,000)		(581,000)		$ 492,000
Other comprehensive income before reclassifications	[1]	(89,000)	[2]	(487,000)	[3]	(821,000)	[4]
Amounts reclassified from accumulated other comprehensive income	[1],[5]
Equity method affiliates	[7]	(15,000)	[1],[6]	(103,000)	[8]	(252,000)	[1],[8]
Net current-period other comprehensive (loss) income	[1]	(104,000)		(590,000)		(1,073,000)
Balance	[1]	(1,275,000)		(1,171,000)		(581,000)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	[1]	(588,000)		(709,000)		(428,000)
Other comprehensive income before reclassifications	[1]	(63,000)	[2]	(59,000)	[3]	(172,000)	[4]
Amounts reclassified from accumulated other comprehensive income	[1],[5]	40,000		105,000		18,000
Equity method affiliates	[7]	264,000	[1],[6]	75,000	[8]	(127,000)	[1],[8]
Net current-period other comprehensive (loss) income	[1]	241,000		121,000		(281,000)
Balance	[1]	(347,000)		(588,000)		(709,000)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Balance	[1]	(14,000)		(15,000)		(14,000)
Other comprehensive income before reclassifications	[1]	(2,000)	[2]			4,000	[4]
Amounts reclassified from accumulated other comprehensive income	[1],[5]			1,000		1,000
Equity method affiliates	[1],[7]	(1,000)	[6]			(6,000)	[8]
Net current-period other comprehensive (loss) income	[1]	(3,000)		1,000		(1,000)
Balance	[1]	(17,000)		(14,000)		(15,000)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	[1]	(38,000)		(2,000)		(6,000)
Other comprehensive income before reclassifications	[1]	(21,000)	[2]	(18,000)	[3]	10,000	[4]
Amounts reclassified from accumulated other comprehensive income	[1],[5]	22,000		(20,000)		(6,000)
Equity method affiliates	[7]		[1],[6]	2,000	[8]
Net current-period other comprehensive (loss) income	[1]	1,000		(36,000)		4,000
Balance	[1]	(37,000)		(38,000)		(2,000)
AOCI Attributable to Parent [Member]
Balance	[1]	(1,811,000)		(1,307,000)		44,000
Other comprehensive income before reclassifications	[1]	(175,000)	[2]	(564,000)	[3]	(979,000)	[4]
Amounts reclassified from accumulated other comprehensive income	[1],[5]	62,000		86,000		13,000
Equity method affiliates	[7]	248,000	[1],[6]	(26,000)	[8]	(385,000)	[1],[8]
Net current-period other comprehensive (loss) income	[1]	135,000		(504,000)		(1,351,000)
Balance	[1]	$ (1,676,000)		$ (1,811,000)		$ (1,307,000)

[1] All amounts are after tax. Amounts in parentheses indicate debits to accumulated other comprehensive income.

[2] Amounts are net of total tax benefit of $52 million, including $36 million related to the retirement plans component, $12 million related to the hedges component, $3 million related to the foreign currency translation adjustments, and $1 million related to the investments component.

[3] Amounts are net of total tax benefit of $41 million, including $35 million related to the retirement plans component and $6 million related to the hedges component.

[4] Amounts are net of total tax benefit of $96 million, including $(7) million related to the hedges component and $104 million related to the retirement plans component and $(1) million related to the investments component.

[5] Tax effects of reclassifications are disclosed separately in this Note 17.

[6] Most of the changes in equity method affiliate accumulated other comprehensive income components in 2016 relate to disposal transactions with amounts reclassified to the income statement. See Note 7 (Investments) to the Consolidated Financial Statements for more information on the Dow Corning realignment and PCE disposition transactions.

[7] Tax effects related to equity method affiliates are not significant in the reported periods except for the tax expense of $20 million related to the pension component in 2016.

[8] Certain amounts have been reclassified to conform to the current year presentation of accumulated other comprehensive income changes related to equity method affiliates. See Note 8 (Acquisitions) to the Consolidated Financial Statements for more information on the Samsung Corning Precision acquisition.