Note 18 - Component of the Net Periodic benefit Cost - (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Total net pension income	$ (22)	$ (23)
Defined Benefit Plans [Member] | U.S. [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	3	3
Interest cost	21	30
Expected return on plan assets	(49)	(53)
Prior service credit	(2)	(2)
Actuarial loss	4
Net pension income before special termination benefits	(23)	(22)
Special termination benefits	1	1
Net pension income from major plans	(22)	(21)
Total net pension income	(22)	(21)
Defined Benefit Plans [Member] | Non-US [Member]
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Service cost	1	1
Interest cost	2	3
Expected return on plan assets	(5)	(6)
Actuarial loss	$ 2	1
Net pension income before special termination benefits		(1)
Net pension income from major plans		(1)
Other plans		(1)
Total net pension income		$ (2)