Note 17 - Other Comprehensive (Loss) Income - Changes in Other Comprehensive Income (Loss), by Component (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Currency translation adjustments		$ (3)	$ (1)	$ (15)	$ (6)
Newly established net (loss) gain		(1)	0	(89)	137
Newly established prior service cost		0	0	(29)	(28)
Tax provision		0	0	0	0
Newly established net (loss) gain and prior service cost, net of tax		(1)	0	(118)	109
Amortization of prior service cost (credit) (1)	[1]	3	(1)	6	(4)
Amortization of actuarial (gains) losses (1)	[1]	(8)	3	(23)	7
Total reclassification adjustments		(5)	2	(17)	3
Tax provision		0	0	0	0
Reclassification adjustments, net of tax		(5)	2	(17)	3
Pension and other postretirement benefit plan changes, net of tax		(6)	2	(135)	112
Other comprehensive (loss) income		$ (9)	$ 1	$ (150)	$ 106

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 13, "Retirement Plans and Other Postretirement Benefits".