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Earnings Per Share
 6 Months Ended
Jun. 30, 2025
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted earnings per share is computed using the weighted average number of common shares outstanding and, when dilutive, common share equivalents. The computation of basic and diluted earnings per share was as follows:
Three Months Ended June 30,Six Months Ended June 30,
(in millions, except share and per share data)
2025202420252024
Net income
$22.5 $188.6 $57.9 $240.1 
    Add back interest expense, net of tax
— 2.5 — 4.9 
Net income, diluted
$22.5 $191.1 $57.9 $245.0 
Weighted average number of common shares outstanding, basic (in thousands)70,389 70,062 70,330 70,010 
Restricted stock units
159 72 195 77 
Stock options
104 140 115 157 
Convertible Notes
— 3,528 — 3,528 
Weighted average number of common shares outstanding, diluted (in thousands)
70,652 73,802 70,641 73,771 
Earnings per share:
    Basic
$0.32 $2.69 $0.82 $3.43 
    Diluted
$0.32 $2.59 $0.82 $3.32 
The number of common share equivalents excluded from the computation of diluted earnings per share because either the effect would have been anti-dilutive, or the performance criteria related to the units had not yet been met, were as follows:
Three Months Ended June 30,Six Months Ended June 30,
 (in thousands)
2025202420252024
Restricted stock units
441 471 431 456 
Stock options
130 286 134 249 
Convertible Notes
1,862 — 2,671 — 
Total2,433 757 3,236 706