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Note 9 - 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
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net income (loss) available to common stockholders - Numerator basic and diluted | $ (57) | $ 38 | $ (242)
Basic (in shares) | 145.2 | 144.4 | 143.6
Employee compensation-related shares, including stock options (in shares) |  | 0.2 |
Weighted-average common shares outstanding - Diluted (in shares) | 145.2 | 144.6 | 143.6

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