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v3.6.0.2

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, 2013 | 46 | 46 |  |  |
Beginning Balance at Dec. 31, 2013 | $ 893 | $ 0 | $ 341 | $ (1) | $ 553
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 62 |  |  |  | 62
Other comprehensive income (loss), net | 0 |  |  |  |
Convertible senior notes transactions, including issuance costs, in shares |  | 2 |  |  |
Convertible senior notes transactions, including issuance costs | 22 |  | 22 |  |
Share-based compensation, shares |  | 2 |  |  |
Share-based compensation | 30 | $ 0 | 30 |  |
Tax benefit from share-based compensation | $ 3 |  | 3 |  |
Ending Balance, shares at Dec. 31, 2014 | 49 | 50 |  |  |
Ending Balance at Dec. 31, 2014 | $ 1,010 | $ 0 | 396 | (1) | 615
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 143 |  |  |  | 143
Other comprehensive income (loss), net | (3) |  |  | (3) |
Common stock offering transaction, including issuance costs, shares |  | 6 |  |  |
Common stock offering transaction, including issuance costs | 373 |  | 373 |  |
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 income | 52 |  |  |  | 52
Other comprehensive income (loss), net | 2 |  |  | 2 |
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 |  | 57 |  |  |
Ending Balance at Dec. 31, 2016 | $ 1,649 | $ 0 | $ 841 | $ (2) | $ 810

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