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Earnings (Loss) Per Share
 12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Earnings (Loss) Per Share EARNINGS PER SHARE
Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of common shares outstanding for the period, including vested RSU awards. Diluted EPS is computed by dividing net income by the weighted average number of shares outstanding, noted above, adjusted for the dilutive effect of stock options and unvested RSU awards.
The following table presents the calculation of basic and diluted EPS:
 202020192018
Net income from continuing operations
$381.8 $450.8 $395.9 
Income (loss) from discontinued operations, net of income taxes(0.2)(0.8)0.1 
Net income
$381.6 $450.0 $396.0 
Basic weighted average common shares outstanding88.3 90.1 90.9 
Dilutive effect of stock options and unvested RSUs0.4 0.4 0.4 
Diluted weighted average common shares outstanding88.7 90.5 91.3 
Basic EPS amounts(1):
Continuing operations
$4.32 $5.00 $4.36 
Discontinued operations
$— $(0.01)$— 
Net income
$4.32 $4.99 $4.36 
Diluted EPS amounts(1):
Continuing operations
$4.30 $4.98 $4.34 
Discontinued operations
$— $(0.01)$— 
Net income
$4.30 $4.97 $4.34 
(1) EPS amounts are calculated discretely and, therefore, may not add up to the total due to rounding.

A summary of anti-dilutive equity instruments excluded from the computation of diluted EPS is as follows:
 202020192018
Anti-dilutive equity instruments excluded from the computation of diluted EPS1.7 2.4 2.3