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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Basic and Diluted EPS
The following table presents the calculation of basic and diluted EPS:
 202320222021
Net income from continuing operations
$1,020.2 $1,377.7 $1,373.3 
Income (loss) from discontinued operations, net of income taxes
0.9 (0.3)(0.3)
Net income
$1,021.1 $1,377.4 $1,373.0 
Basic weighted average common shares outstanding44.6 56.3 74.2 
Dilutive effect of unvested RSUs and stock options0.3 0.4 0.8 
Diluted weighted average common shares outstanding44.9 56.7 75.0 
Basic EPS amounts(1):
Continuing operations
$22.87 $24.47 $18.51 
Discontinued operations
$0.02 $(0.01)$— 
Net income
$22.89 $24.47 $18.50 
Diluted EPS amounts(1):
Continuing operations
$22.72 $24.30 $18.31 
Discontinued operations
$0.02 $(0.01)$— 
Net income
$22.74 $24.29 $18.31 
(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:
 202320222021
Anti-dilutive equity instruments excluded from the computation of diluted EPS— 0.1 —