Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Disaggregation of Revenue

The following table presents our revenue disaggregated by major product and service lines (in millions):

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Product	$	211.9	$	189.9	$	404.2	$	352.6
Service:
Security subscription	222.6		183.1		434.0		352.7
Technical support and other	181.0		148.7		354.2		289.0
Total service revenue	403.6		331.8		788.2		641.7
Total revenue	$	615.5	$	521.7	$	1,192.4	$	994.3