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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2020
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 March 31,
(in millions)20202019
PRSU expense$0.3  $0.3  
Option expense1.2  1.2  
RSU/DSU expense5.8  5.1  
Total stock-based compensation expense$7.3  $6.6