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Earnings Per Share | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The computations of the weighted average shares outstanding for the periods indicated are as follows (in millions):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Weighted-average shares outstanding | 423.2 |  |  | 485.8 |  |  | 423.1 |  |  | 485.6 |
Share-based payment awards classified as participating securities (1) | 0.1 |  |  | 0.4 |  |  | 0.2 |  |  | 0.5 |
Basic weighted-average shares outstanding | 423.3 |  |  | 486.2 |  |  | 423.3 |  |  | 486.1 |
Dilutive securities (2) | 0.2 |  |  | — |  |  | 0.3 |  |  | — |
Diluted weighted-average shares outstanding | 423.5 |  |  | 486.2 |  |  | 423.6 |  |  | 486.1 |
(1) | For the three months ended June 30, 2019 and 2018, dividends and equivalents for share-based awards that are expected to be forfeited do not have a material effect on net income for basic and diluted earnings per share.
(2) | The three and six months ended June 30, 2018 excludes 0.8 million and 0.9 million potentially dilutive share-based awards as their effect would be anti-dilutive.
At June 30, 2019, there were 1.3 million potentially dilutive restricted stock awards with performance-based vesting targets that were not met and as such, have been excluded from the computation of diluted earnings per share.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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