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Earnings Per Share | 6 Months Ended
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Jun. 30, 2021
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,
| 2021 |  | 2020 |  | 2021 |  | 2020
Basic weighted average shares outstanding | 425.4 |  |  | 424.2 |  |  | 425.1 |  |  | 424.0 |
Dilutive securities (1) | 2.4 |  |  | 0.5 |  |  | 2.6 |  |  | — |
Diluted weighted average shares outstanding | 427.8 |  |  | 424.7 |  |  | 427.7 |  |  | 424.0 |
(1)The six months ended June 30, 2020 excludes 0.8 million of potentially dilutive share-based awards as their effect would be anti-dilutive. At June 30, 2021 there were no potentially dilutive restricted stock awards with performance-based targets that were not met and as such, have been excluded from the computation of diluted earnings per share. At June 30, 2020, there were 0.7 million potentially dilutive restricted stock awards with performance-based targets that were not met and as such, have been excluded from the computation of diluted earnings per share.

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