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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Schedule of Weighted Average Number of Shares | Our weighted-average shares outstanding for the three months ended March 31, 2019 and 2018 was as follows:
| Three Months Ended March 31,
(in millions) | 2019 |  | 2018
Weighted-average number of shares of common stock outstanding - basic | 102.3 |  |  | 106.8 |
Stock options | — |  |  | 1.2 |
Restricted stock units | — |  |  | 2.0 |
Weighted-average shares and assumed conversions - diluted(1) | 102.3 |  |  | 110.0 |
(1) | Due to the net loss during the three months ended March 31, 2019, the denominator in the diluted earnings per share calculation does not include the effects of the stock awards for which the average market price for the period exceeds the exercise price, as it would result in a less dilutive computation. As a result, reported diluted earnings per share for the three months ended March 31, 2019 are the same as basic earnings per share.

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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