Note 14 - Changes in Other Comprehensive Income (Loss), by Component (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Currency translation adjustments		$ 5	$ (1)
Newly established net actuarial loss			(1)
Newly established net actuarial loss, net of tax			(1)
Amortization of prior service credit	[1]	(2)	(2)
Amortization of actuarial losses	[1]	2	9
Total reclassification adjustments			7
Reclassification adjustments, net of tax			7
Pension and other postretirement benefit plan changes, net of tax			6
Other comprehensive income, net of tax		$ 5	$ 5

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 11, "Retirement Plans and Other Postretirement Benefits".