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Earnings Per Share
6 Months Ended
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,
2021202020212020
Basic weighted average shares outstanding425.4 424.2 425.1 424.0 
Dilutive securities (1)
2.4 0.5 2.6 — 
Diluted weighted average shares outstanding427.8 424.7 427.7 424.0 
(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.