Note 21 - Changes in Other Comprehensive (Loss) Income, by Component (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ (12)	$ 3
Newly established net actuarial gain		1
Newly established net actuarial gain, net of tax		1
Amortization of prior service credit	[1]	(2)	(1)
Amortization of actuarial losses	[1]	5
Total reclassification adjustments		3	(1)
Tax provision		(1)
Reclassification adjustments, net of tax		2	(1)
Pension and other postretirement benefit plan changes, net of tax		3	(1)
Other comprehensive (loss) income, net of tax		$ (9)	$ 2

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