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Weighted Average Shares Outstanding (Tables)
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Weighted Average Shares Outstanding Weighted average shares outstanding are shown below:
Three months ended March 31,
20212020
Basic shares outstanding105.0 104.3 
Effect of potential common stock:
Common stock awards1.0 1.0 
Diluted shares outstanding106.0 105.3