Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

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)	2022		2021		2022		2021
PRSU expense	$	6.4	$	10.3	$	22.6	$	29.6
Option expense	0.5		0.4		0.5		1.2
RSU/DSU expense	5.4		5.4		16.0		15.5
Total stock-based compensation expense	$	12.3	$	16.1	$	39.1	$	46.3