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Earnings Per Share ("EPS") of Common Stock
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share (EPS) of Common Stock Earnings Per Share ("EPS") of Common Stock
The following table reconciles the numerator and denominator used to calculate basic and diluted EPS of common stock:
Three months ended March 31,
 20222021
 (In millions, except per share amounts)
Numerator:
Net income $27.8 $18.1 
Income allocated to participating securities(0.1)(0.1)
Net income for basic EPS$27.7 $18.0 
Interest on 2¼% Notes
0.7 — 
Net income for diluted EPS$28.4 $18.0 
Denominator:
Basic weighted average shares80.2 77.6 
Effect of:
21/4% Notes
5.6 3.1 
Diluted weighted average shares85.8 80.7 
Basic
Basic EPS$0.34 $0.23 
Diluted
Diluted EPS$0.33 $0.22 
Securities which would have been anti-dilutive are insignificant and are excluded from the computation of diluted earnings per share in all periods presented.
The increase in the dilutive effect of the 2¼% Notes in the three months ended March 31, 2022, is the result of the adoption of new accounting guidance. See Note 1.