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Stock-Based Compensation Plans (Tables)
3 Months Ended
Mar. 31, 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 
March 31,
 20242023
Stock options$8.2 $8.5 
Restricted stock units2.7 1.4 
Total$10.9 $9.9 
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$31.1 
202511.4 
20265.4 
20270.2 
2028— 
Total$48.1