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Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions | Total | Common Stock [Member] | Additional - Paid In Capital [Member] | Retained Earnings Deficit [Member] | NOV Net Investment [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2012 | $ 1,971 |  |  |  | $ 1,953 | $ 18
Net income (loss) | 147 |  |  |  | 147 |
Contributions/transfers from (distributions to) NOV | (298) |  |  |  | (298) |
Other comprehensive loss | (18) |  |  |  |  | (18)
Ending balance at Dec. 31, 2013 | 1,802 |  |  |  | 1,802 |
Net income (loss) | 116 |  |  | $ 58 | 58 |
Contributions/transfers from (distributions to) NOV | 75 |  |  |  | 75 |
Stock-based compensation | 18 |  | $ 13 |  | 5 |
Reclassification of NOV net investment to additional paid-in capital |  |  | 1,940 |  | $ (1,940) |
Issuance of common stock at Separation, value |  |  | (1) |  |  |
Issuance of common stock at the Separation, par value |  | $ 1 |  |  |  |
Other comprehensive loss | (45) |  |  |  |  | (45)
Ending balance at Dec. 31, 2014 | 1,966 |  | 1,952 | 58 |  | (45)
Ending balance, Common stock value at Dec. 31, 2014 | 1 | $ 1 |  |  |  |
Issuance of common stock at Separation, share |  | 107,053,000 |  |  |  |
Issuance of common stock for exercise of options |  | 14,000 |  |  |  |
Ending balance, shares at Dec. 31, 2014 |  | 107,067,000 |  |  |  |
Net income (loss) | (502) |  |  | (502) |  |
Stock-based compensation | 27 |  | 27 |  |  |
Other comprehensive loss | (89) |  |  |  |  | (89)
Ending balance at Dec. 31, 2015 | 1,403 |  | 1,980 | $ (444) |  | $ (134)
Ending balance, Common stock value at Dec. 31, 2015 | 1 | $ 1 |  |  |  |
Adjustment to income tax from spin-off | 3 |  | 3 |  |  |
Payments related to taxes withheld on stock-based compensation | $ (2) |  | $ (2) |  |  |
Issuance of common stock for exercise of options | 15,077 | 152,000 |  |  |  |
Ending balance, shares at Dec. 31, 2015 |  | 107,219,000 |  |  |  |

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