Note 17 - Retirement Plans - (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Retirement Plans [Line Items]
Defined Benefit Plan, Special Termination Benefits		$ 13	$ 3	$ 9
Minimum [Member] | Foreign Pension Plan [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		2.60%
Maximum [Member] | Foreign Pension Plan [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		5.30%
U.S. [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (in Dollars)		$ (7)	(7)	$ (8)
Defined Benefit Plan, Amortization of Gains (Losses) (in Dollars)			(7)
Decrease in interest cost of defined benefit pension plans			31
Defined Benefit Plan, Special Termination Benefits		$ 13	$ 3
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		7.00%	7.40%	7.40%
U.S. [Member] | Equity Securities [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations		2.00%	10.00%
U.S. [Member] | Government Bonds [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations		31.00%	23.00%
Defined Benefit Plan, Target Plan Asset Allocations, Duration		18 years	18 years
Non-US [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Amortization of Gains (Losses) (in Dollars)		$ (3)		$ (2)
Decrease in interest cost of defined benefit pension plans			$ 4
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets		4.21%	4.65%	4.69%
Non-US [Member] | Equity Securities [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations		0.00%	0.00%
Non-US [Member] | Government Bonds [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations		7.00%	9.00%
Defined Benefit Plan, Target Plan Asset Allocations, Duration		13 years	13 years
Scenario, Forecast [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) (in Dollars)	$ (8)
Defined Benefit Plan, Amortization of Gains (Losses) (in Dollars)	$ (10)
Cash Balance Plan [Member]
Retirement Plans [Line Items]
Defined Benefit Plan Contributions By Employer Minimum Percentage Of Employee Salary		7.00%
Defined Benefit Plan Contributions By Employer Maximum Percentage Of Employee Salary		8.00%
United States Pension Plan of US Entity [Member] | Scenario, Forecast [Member]
Retirement Plans [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets	6.40%