Segment and Geographical Area Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

The tables below summarize our revenue and long-lived assets by geographical area:

Revenue by geographical area
	Three months ended September 30,				Nine months ended September 30,
(in millions)	2018		2017		2018		2017
United States	$	198.7	$	171.8	$	566.0	$	503.4
United Kingdom	17.9		17.0		54.6		47.5
Continental Europe	20.1		18.2		60.3		51.0
Australia	9.9		8.8		31.2		25.5
Canada	7.4		7.5		22.6		22.0
Asia	5.9		5.3		18.1		15.7
Other	1.4		1.3		4.4		3.5
Total International	62.6		58.1		191.2		165.2
Consolidated revenue	$	261.3	$	229.9	$	757.2	$	668.6

Long-lived assets by geographical area
(in millions)	As of September 30, 2018		As of December 31, 2017
United States	$	128.4	$	131.9
United Kingdom	4.3		6.0
Continental Europe	1.3		1.7
Australia	5.1		2.3
Canada	0.3		0.2
Asia	5.1		5.2
Other	—		0.1
Total International	16.1		15.5
Consolidated property, equipment, and capitalized software, net	$	144.5	$	147.4