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STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY (UNAUDITED) (UAH) - USD ($) $ in Millions | Total | Common Stock | Additional Capital Invested | Treasury Stock | Retained Earnings | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | --- | ---
Balance beginning (in shares) at Dec. 31, 2023 |  | 328,000,000.0 |  |  |  |
Balance beginning at Dec. 31, 2023 | $ 9,324 | $ 4 | $ 8,992 | $ (3,441) | $ 3,831 | $ (62)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | (124) |  |  |  | (124) |
Other comprehensive loss | (19) |  |  |  |  | (19)
Stock-settled share-based compensation | 25 |  | 25 |  |  |
Stock issued for share-based awards, net of shares withheld for tax (in shares) |  | 800,000 |  |  |  |
Stock issued for share-based awards, net of shares withheld for tax | (18) |  | (44) | 69 | (43) |
Balance ending (in shares) at Mar. 31, 2024 |  | 328,800,000 |  |  |  |
Balance ending at Mar. 31, 2024 | $ 9,188 | $ 4 | 8,973 | (3,372) | 3,664 | (81)
Balance beginning (in shares) at Dec. 31, 2024 | 327,899,771 | 327,900,000 |  |  |  |
Balance beginning at Dec. 31, 2024 | $ 12,675 | $ 4 | 8,980 | (3,377) | 6,880 | 188
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | 387 |  |  |  | 387 |
Other comprehensive loss | (23) |  |  |  |  | (23)
Stock-settled share-based compensation | $ 28 |  | 28 |  |  |
Repurchase of common stock (in shares) | (4,000,000.0) | (3,800,000) |  |  |  |
Repurchases of common stock | $ (356) |  |  | (356) |  |
Stock issued for settlement of warrants (in shares) |  | 1,800,000 |  |  |  |
Stock issued for settlement of warrants | 0 |  | (99) | 133 | (34) |
Stock issued for share-based awards, net of shares withheld for tax (in shares) |  | 1,600,000 |  |  |  |
Stock issued for share-based awards, net of shares withheld for tax | $ (94) |  | (96) | 98 | (96) |
Balance ending (in shares) at Mar. 31, 2025 | 327,494,648 | 327,500,000 |  |  |  |
Balance ending at Mar. 31, 2025 | $ 12,616 | $ 4 | $ 8,813 | $ (3,502) | $ 7,137 | $ 164

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