Stock-Based Compensation Expense

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation Expense

Stock-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)	2023		2022		2023		2022
Cost of revenue	$	0.1	$	0.1	$	0.3	$	0.3
Research and development expenses	3.5		2.1		9.6		6.3
Selling, general and administrative expenses	6.9		6.8		25.8		23.1
Total	$	10.5	$	9.0	$	35.7	$	29.7