Note 20 - Pension Income From Continuing Operations For All Defined Benefit Plans (Details) - Defined Benefit Plans [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
U.S. [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	$ 10	$ 13
Interest cost	122	109
Expected return on plan assets	(214)	(223)
Prior service credit	(7)	(7)
Actuarial loss		5
Pension income before special termination benefits	(89)	(103)
Special termination benefits	3	5
Curtailment gains	(2)
Net pension income for major defined benefit plans	(88)	(98)
Net pension income	(88)	(98)
Non-US [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	3	3
Interest cost	13	12
Expected return on plan assets	(22)	(26)
Actuarial loss	5	5
Pension income before special termination benefits	(1)	(6)
Curtailment gains	(5)
Net pension income for major defined benefit plans	(1)	(6)
Other plans including unfunded plans	(3)	(4)
Net pension income	$ (4)	$ (10)