Note 17 - Shareholders' Equity (Details) - Reclassifications Out of Accumulated Other Comprehensive Income (AOCI) by Component - USD ($) $ in Millions		1 Months Ended			12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of prior service credit					$ 6	$ 6	$ 5
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amortization of net actuarial (loss) gain	[1],[2]	$ (168)	$ (29)	$ 15
Amortization of prior service credit	[1],[2]	1		1
	[1]	(167)	(29)	16
	[1]	62	11	(6)
	[1]	(105)	(18)	10
	[1]	(1)	(1)	1
Realized gains on designated hedges	[1]	26	10	129
	[1]	(6)	(4)	(48)
	[1]	20	6	81
Total reclassifications for the period	[1]	(86)	123	92
Reclassification out of Accumulated Other Comprehensive Income [Member] | Nonoperating Income (Expense) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Foreign currency translation adjustment	[1]		136
Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
	[1]		136
Realized (losses) gains on investments	[1]	(1)	(1)	1
Realized gains on designated hedges	[1]			91
Reclassification out of Accumulated Other Comprehensive Income [Member] | Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Realized gains on designated hedges	[1]	20	3
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cost of Sales [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Realized gains on designated hedges	[1]	$ 6	$ 7	$ 38

[1] Amounts in parentheses indicate debits to the statement of income.

[2] These accumulated other comprehensive income components are included in net periodic pension cost. See Note 13 (Employee Retirement Plans) to the Consolidated Financial Statements for additional details.