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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Basic and Diluted EPS The following table presents the calculation of basic and diluted EPS:
 202220212020
Net income from continuing operations
$1,377.7 $1,373.3 $381.8 
Loss from discontinued operations, net of income taxes(0.3)(0.3)(0.2)
Net income
$1,377.4 $1,373.0 $381.6 
Basic weighted average common shares outstanding56.3 74.2 88.3 
Dilutive effect of unvested RSUs and stock options0.4 0.8 0.4 
Diluted weighted average common shares outstanding56.7 75.0 88.7 
Basic EPS amounts(1):
Continuing operations
$24.47 $18.51 $4.32 
Discontinued operations
$(0.01)$— $— 
Net income
$24.47 $18.50 $4.32 
Diluted EPS amounts(1):
Continuing operations
$24.30 $18.31 $4.30 
Discontinued operations
$(0.01)$— $— 
Net income
$24.29 $18.31 $4.30 
(1) EPS amounts are calculated discretely and, therefore, may not add up to the total due to rounding.
Anti-Dilutive Equity Instruments Excluded From The Computation Of Diluted Earnings Per Share
A summary of anti-dilutive equity instruments excluded from the computation of diluted EPS is as follows:
 202220212020
Anti-dilutive equity instruments excluded from the computation of diluted EPS0.1 — 1.7