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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Computation Of Basic And Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share (“EPS”) (shares in millions):
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Net income (loss) for basic and diluted EPS | $ | 26 |  |  | $ | 3 |  |  | $ | (61 | ) |  | $ | (104 | )
Basic weighted average shares outstanding | 80.7 |  |  | 84.0 |  |  | 80.8 |  |  | 84.9 |
Options and non-vested stock (a) | 0.8 |  |  | 1.2 |  |  | — |  |  | — |
Diluted weighted average shares outstanding | 81.5 |  |  | 85.2 |  |  | 80.8 |  |  | 84.9 |
Earnings (loss) per share: |  |  |  |  |  |  |
| Basic | $ | 0.33 |  |  | $ | 0.04 |  |  | $ | (0.75 | ) |  | $ | (1.22 | )
| Diluted | $ | 0.32 |  |  | $ | 0.04 |  |  | $ | (0.75 | ) |  | $ | (1.22 | )
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(a) | For the three months ended June 30, 2018 and 2017, 0.2 million and 0.7 million non-vested stock awards, respectively, have an anti-dilutive effect and therefore are excluded from the computation of diluted weighted average shares outstanding. As the Company incurred a net loss for the six months ended June 30, 2018 and 2017, 0.1 million and 0.8 million outstanding options, respectively, and 1.5 million and 1.3 million non-vested stock awards, respectively, have an anti-dilutive effect and therefore are excluded from the computation of diluted weighted average shares outstanding.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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