Note 18 - Component of the Net Periodic benefit Cost - (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Pension Income Expense From Continuing And Discontinued Operations For Major Defined Benefit Plans [Line Items]
Total net pension (income) expense			$ (43)	$ (45)
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	$ 2	6	5
Interest cost	22	31	43	61
Expected return on plan assets	(49)	(54)	(98)	(107)
Prior service credit	(1)	(1)	(3)	(3)
Actuarial loss	3		7
Net pension income before special termination benefits	(22)	(22)	(45)	(44)
Special termination benefits		1	1	2
Curtailment gain		(2)		(2)
Net pension income from major plans	(22)	(23)	(44)	(44)
Total net pension (income) expense	(22)	(23)	(44)	(44)
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	2	2
Interest cost	2	3	4	6
Expected return on plan assets	(4)	(5)	(9)	(11)
Actuarial loss	1	1	3	2
Net pension income before special termination benefits				(1)
Net pension income from major plans				(1)
Other plans	1	(3)	1	(4)
Total net pension (income) expense	$ 1	$ (3)	$ 1	$ (5)