Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Summary of Share-Based Compensation Expense

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

	Three Months Ended June 30,				Six Months Ended June 30,
(in millions)	2020		2019		2020		2019
Cost of revenue	$	0.1	$	0.3	$	0.2	$	0.6
Research and development expenses	2.3		2.4		5.0		4.2
Selling, general and administrative expenses	3.4		5.6		8.5		9.3
Total	$	5.8	$	8.3	$	13.7	$	14.1