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v3.19.3.a.u2

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings
--- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2016 | 55.8 | 57.0 |  |  |
Beginning Balance at Dec. 31, 2016 | $ 1,649 | $ 0 | $ 841 | $ (2) | $ 810
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | (512) |  |  |  | (512)
Exchange of convertible senior notes (in shares) |  | 3.0 |  |  |
Exchange of convertible senior notes | 161 |  | 161 |  |
Other comprehensive income (loss), net | (3) |  |  | (3) |
Share-based compensation | $ 42 |  | 42 |  |
Ending Balance (in shares) at Dec. 31, 2017 | 59.3 | 60.0 |  |  |
Ending Balance at Dec. 31, 2017 | $ 1,337 | $ 0 | 1,044 | (5) | 298
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | 707 |  |  |  | 707
Exchange of convertible senior notes (in shares) |  | 2.0 |  |  |
Exchange of convertible senior notes | 108 |  | 108 |  |
Other comprehensive income (loss), net | (2) |  |  | (2) |
Share-based compensation | 37 |  | 37 |  |
Partial termination of warrants | (550) |  | (550) |  |
Conversion of convertible senior notes | $ 4 |  | 4 |  |
Ending Balance (in shares) at Dec. 31, 2018 | 62.1 | 62.0 |  |  |
Ending Balance at Dec. 31, 2018 | $ 1,647 | $ 0 | 643 | (8) | 1,012
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | 737 |  |  |  | 737
Common stock purchases | (54) | $ (54) | (1) |  | (53)
Exchange of convertible senior notes | 0 |  |  |  |
Other comprehensive income (loss), net | 12 |  |  | 12 |
Share-based compensation | 47 |  | 47 |  |
Partial termination of warrants | (514) |  | (514) |  |
Ending Balance (in shares) at Dec. 31, 2019 |  | 62.0 |  |  |
Ending Balance at Dec. 31, 2019 | $ 1,960 | $ 0 | $ 175 | $ 4 | $ 1,781

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