Note 22 - Changes in Other Comprehensive (Loss) Income, by Component (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ (1)	$ (2)	$ (17)	$ 2
Newly established net actuarial gain				6	5
Tax Provision					(2)
Newly established net actuarial gain, net of tax				6	3
Amortization of prior service credit	[1]	(2)	(2)	(6)	(6)
Amortization of actuarial losses	[1]	5	1	15	3
Recognition of losses (gains) due to curtailments and settlements				1	(2)
Total reclassification adjustments		3	(1)	10	(5)
Tax provision				(1)
Reclassification adjustments, net of tax		3	(1)	9	(5)
Pension and other postretirement benefit plan changes, net of tax		3	(1)	15	$ (2)
Other comprehensive income (loss), net of tax		$ 2	$ (3)	$ (2)

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