Note 21 - Changes in Other Comprehensive (Loss) Income, by Component (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ (4)	$ 1	$ (16)	$ 4
Newly established net actuarial gain		5	5	6	5
Tax Provision			(2)		(2)
Newly established net actuarial gain, net of tax		5	3	6	3
Amortization of prior service credit	[1]	(2)	(3)	(4)	(4)
Amortization of actuarial losses	[1]	5	2	10	2
Recognition of losses (gains) due to curtailments and settlements		1	(2)	1	(2)
Total reclassification adjustments		4	(3)	7	(4)
Tax provision				(1)
Reclassification adjustments, net of tax		4	(3)	6	(4)
Pension and other postretirement benefit plan changes, net of tax		9		12	(1)
Other comprehensive income (loss), net of tax		$ 5	$ 1	$ (4)	$ 3

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 18, "Retirement Plans and Other Postretirement Benefits".