Note 10 - Earnings Per Share - Reconciliation of the Numerators and Denominators of the Earnings Per Share Calculations (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income (loss) available to common stockholders - Numerator basic and diluted	$ 38	$ (242)	$ 197
Basic (in shares)	144.4	143.6	144.8
Employee compensation-related shares, including stock options (in shares)	0.2	0.0	1.4
Weighted-average common shares outstanding - Diluted (in shares)	144.6	143.6	146.2