Note 8 - Earnings Per Share - Reconciliation of the Numerators and Denominators of the Earnings per Share Calculations (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income (loss) available to common stockholders - Numerator basic and diluted	$ (88)	$ 48	$ (63)	$ 172
Weighted-average common shares outstanding - Basic (in shares)	143.4	144.8	143.6	145.0
Employee compensation-related shares, including stock options (in shares)	0.0	1.4	0.0	1.4
Weighted-average common shares outstanding - Diluted (in shares)	143.4	146.2	143.6	146.4