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STOCKHOLDERS' EQUITY (Tables)
9 Months Ended
Sep. 30, 2024
STOCKHOLDERS' EQUITY  
Schedule of computation of diluted weighted average number of common shares outstanding
 (in millions) Three Months Ended
September 30,



Nine Months Ended
September 30,

 
2024


2023



2024



2023

Computation of diluted earnings:











   Net income 
$
151.5

$
104.2


$
260.8


$
210.4

   Add: Interest expense from assumed conversion of convertible notes, net of tax
1.1


1.1



3.2



3.1

      Net income for diluted earnings per share calculation
$
152.6

$
105.3


$
264.0


$
213.5

















Computation of diluted weighted average shares outstanding:











Basic weighted average shares outstanding
44,416,803


48,406,473



45,221,248



49,285,143

Incremental shares from assumed exercise of stock options and vesting of restricted stock units
355,985


282,312



418,479



379,331

Incremental shares from assumed conversion of convertible debt
2,781,818

2,781,818



2,781,818



2,781,818

Diluted weighted average shares outstanding 

47,554,606


51,470,603



48,421,545



52,446,292