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Earnings Per Share (Notes)
 3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Earnings per share
The following table shows the calculation of basic and diluted earnings per share (in millions, except per share data).
Three Months Ended
March 31,
20222021
Income from continuing operations, net of income taxes $67.6 $42.8 
Income (loss) from discontinued operations, net of income taxes(0.8)5.9 
Net income
$66.8 $48.7 
Weighted-average number of common shares outstanding - basic51.6 53.0 
Dilutive effect of common share equivalents0.7 0.7 
Weighted-average number of common shares and share equivalents outstanding - diluted52.3 53.7 
Basic earnings per share:
Continuing operations$1.31 $0.81 
Discontinued operations(0.01)0.11 
$1.30 $0.92 
Diluted earnings per share:
Continuing operations$1.29 $0.80 
Discontinued operations(0.01)0.11 
$1.28 $0.91