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Stock-Based Compensation Plans (Tables)
6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement, Noncash Expense [Abstract]  
Share-Based Payment Arrangement, Restricted Stock Unit, Activity
Schedule of Stock Based Compensation Expense
Stock-based compensation expense consists of the following:
(In millions)For the Three Months Ended 
June 30,
For the Six Months Ended 
June 30,
 2024202320242023
Stock options$8.2 $8.6 $16.4 $17.1 
Restricted stock units2.4 1.2 5.1 2.6 
Total$10.6 $9.8 $21.5 $19.7 
Schedule of Future Share-Based Compensation Cost Based on the stock-based awards that are currently outstanding, we expect to recognize the future stock-based compensation expense as follows:
(in millions)
YearTotal Projected
Stock-Based Compensation Expense
Remainder of 2024$21.7 
202513.2 
20267.1 
20270.7 
2028— 
Total$42.7