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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
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Schedule Of Basic And Diluted Earnings Per Share |
|  |  |  | Three Months Ended March 31, |
| In millions except per share amounts |  | 2018 |  | 2017 |
| Basic earnings per share: |  |  |  |  |  |  |
|  | Net income (loss) available to common shareholders |  | $ | (98) |  | $ | (72) |
|  | Basic weighted average shares (1) |  |  | 88.1 |  |  | 131.4 |
|  | Net income (loss) per basic common share |  | $ | (1.12) |  | $ | (0.55) |
| Diluted earnings per share: |  |  |  |  |  |  |
|  | Net income (loss) available to common shareholders |  |  | (98) |  |  | (72) |
|  | Diluted weighted average shares (1) |  |  | 88.1 |  |  | 131.4 |
|  | Net income (loss) per diluted common share |  | $ | (1.12) |  | $ | (0.55) |
| Potentially dilutive securities excluded from the calculation of diluted EPS because of antidilutive affect |  |  | 13.7 |  |  | 14.8 |
|  | _________________ |  |  |  |  |  |  |
|  | (1) - Includes 0.3 million of participating securities that met the service condition and were eligible to receive nonforfeitable dividends or dividend equivalents for the |
|  | three months ended March 31, 2018 and 2017. |

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