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v3.8.0.1

Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Loss | Retained Earnings
--- | --- | --- | --- | --- | ---
Beginning Balance, shares at Dec. 31, 2014 | 49 | 50 |  |  |
Beginning Balance at Dec. 31, 2014 | $ 1,010 | $ 0 | $ 396 | $ (1) | $ 615
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net (loss) income | 143 |  |  |  | 143
Other comprehensive income (loss), net | (3) |  |  | (3) |
Common stock offering, including issuance costs, shares |  | 6 |  |  |
Common stock offering, including issuance costs | 373 |  | 373 |  |
1.625% Convertible Notes exchange transaction | 0 |  |  |  |
Share-based compensation, shares |  | 0 |  |  |
Share-based compensation | 26 | $ 0 | 26 |  |
Tax benefit from share-based compensation | $ 8 |  | 8 |  |
Ending Balance, shares at Dec. 31, 2015 | 55 | 56 |  |  |
Ending Balance at Dec. 31, 2015 | $ 1,557 | $ 0 | 803 | (4) | 758
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net (loss) income | 52 |  |  |  | 52
Other comprehensive income (loss), net | 2 |  |  | 2 |
1.625% Convertible Notes exchange transaction | 0 |  |  |  |
Share-based compensation, shares |  | 1 |  |  |
Share-based compensation | 36 | $ 0 | 36 |  |
Tax benefit from share-based compensation | $ 2 |  | 2 |  |
Ending Balance, shares at Dec. 31, 2016 | 56 | 57 |  |  |
Ending Balance at Dec. 31, 2016 | $ 1,649 | $ 0 | 841 | (2) | 810
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net (loss) income | (512) |  |  |  | (512)
Other comprehensive income (loss), net | (3) |  |  | (3) |
Issuance of common stock in connection with 1.625% Notes exchange, shares |  | 3 |  |  |
1.625% Convertible Notes exchange transaction | 161 |  | 161 |  |
Share-based compensation, shares |  | 0 |  |  |
Share-based compensation | 42 | $ 0 | 42 |  |
Ending Balance, shares at Dec. 31, 2017 |  | 60 |  |  |
Ending Balance at Dec. 31, 2017 | $ 1,337 | $ 0 | $ 1,044 | $ (5) | $ 298

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