Note 15 - Shareholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance		$ (547,000,000)	$ (877,000,000)	$ (1,171,000,000)	$ (581,000,000)
Other comprehensive income (loss)		235,000,000	(163,000,000)	860,000,000	(399,000,000)
Equity method affiliates		10,000,000	(18,000,000)	9,000,000	(78,000,000)
Net current-period other comprehensive income (loss)		245,000,000	(181,000,000)	869,000,000	(477,000,000)
Balance		(302,000,000)	(1,058,000,000)	(302,000,000)	(1,058,000,000)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	[1]	(323,000,000)	(703,000,000)	(588,000,000)	(709,000,000)
Other comprehensive income (loss)	[1],[2]	(31,000,000)	(1,000,000)	(64,000,000)	5,000,000
Equity method affiliates	[1],[3]		6,000,000	264,000,000	(4,000,000)
Net current-period other comprehensive income (loss)	[1]	(5,000,000)	6,000,000	260,000,000	12,000,000
Balance	[1]	(328,000,000)	(697,000,000)	(328,000,000)	(697,000,000)
Amounts reclassified from accumulated other comprehensive income (2)	[1],[2]	26,000,000	$ 1,000,000	60,000,000	$ 11,000,000
Balance				(1,811,000,000)
Balance		$ (715,000,000)		$ (715,000,000)

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

[2] Tax effects are not significant.

[3] For the three months ended September 30, 2016, tax effects are not significant. For the nine months ended September 30, 2016, amounts are net of total tax expense of $19 million. For the three and nine months ended September 30, 2015, tax effects are not significant.