Stock-Based Compensation Expense (Tables)

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

Compensation expense related to stock-based awards was recorded as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2022		2021		2022		2021
Cost of revenue	$	0.1	$	0.1	$	0.3	$	0.3
Research and development expenses	2.1		1.9		6.3		5.8
Selling, general and administrative expenses	6.8		6.2		23.1		19.7
Total	$	9.0	$	8.2	$	29.7	$	25.8