Note 16 - Component of the Net Periodic benefit Cost - (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Total net pension income	$ (23)	$ (28)
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	30	28
Expected return on plan assets	(53)	(56)
Prior service credit	(2)	(2)
Actuarial loss		1
Net pension income before special termination benefits	(22)	(26)
Special termination benefits	1
Net pension income	(21)	(26)
Total net pension income	(21)	(26)
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	3	3
Expected return on plan assets	(6)	(7)
Actuarial loss	1	1
Net pension income before special termination benefits	(1)	(2)
Net pension income	(1)	(2)
Other plans	(1)
Total net pension income	$ (2)	$ (2)