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



Six Months Ended
June 30,

 
2024


2023



2024



2023

Computation of diluted earnings:











   Net income 
$
83.1

$
86.1


$
109.3


$
106.2

   Add: Interest expense from assumed conversion of convertible notes, net of tax
1.0


1.1



2.0



2.0

      Net income for diluted earnings per share calculation
$
84.1

$
87.2


$
111.3


$
108.2

















Computation of diluted weighted average shares outstanding:











Basic weighted average shares outstanding
45,429,998


49,637,589



45,623,470



49,724,478

Incremental shares from assumed exercise of stock options and vesting of restricted stock units
488,454


452,008



423,354



412,223

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 

48,700,270


52,871,415



48,828,642



52,918,519