Note 19 - Pension Income From Continuing Operations For All Defined Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
U.S. [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Actuarial loss	$ (5)
Non-US [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Actuarial loss	(5)	$ (3)
Defined Benefit Plans [Member] | U.S. [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	13	12
Interest cost	109	115
Expected return on plan assets	(223)	(243)
Prior service credit	(7)	(7)
Actuarial loss	5
Pension income before special termination benefits	(103)	(123)
Special termination benefits	5	13
Net pension income for major defined benefit plans	(98)	(110)
Net pension income	(98)	(110)
Defined Benefit Plans [Member] | Non-US [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	3	3
Interest cost	12	12
Expected return on plan assets	(26)	(27)
Actuarial loss	5	3
Pension income before special termination benefits	(6)	(9)
Net pension income for major defined benefit plans	(6)	(9)
Other plans including unfunded plans	(4)
Net pension income	$ (10)	$ (9)