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Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expense A summary of the Company's stock-based compensation expense is presented in the following table:
Three Months Ended September 30,Nine Months Ended September 30,
(in millions)2024202320242023
PRSU expense$3.6 $5.9 $12.2 $18.8 
RSU expense4.4 5.3 13.4 15.5 
Option expense0.6 0.5 1.7 1.6 
Total stock-based compensation expense$8.6 $11.7 $27.3 $35.9