Segment Information - Supplemental Geographic and Customer Solution Set Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenue	$ 537.3	$ 520.9	$ 1,073.3	$ 1,025.4
Finance & Risk
Segment Reporting Information [Line Items]
Revenue	311.4	303.8	622.6	599.3
Sales & Marketing
Segment Reporting Information [Line Items]
Revenue	225.9	217.1	450.7	426.1
Operating segments | North America
Segment Reporting Information [Line Items]
Revenue	381.3	357.2	748.6	696.6
Operating segments | North America | Finance & Risk
Segment Reporting Information [Line Items]
Revenue	209.5	199.7	411.7	390.2
Operating segments | North America | Sales & Marketing
Segment Reporting Information [Line Items]
Revenue	171.8	157.5	336.9	306.4
Operating segments | International
Segment Reporting Information [Line Items]
Revenue	156.0	163.7	324.7	333.6
Operating segments | International | Finance & Risk
Segment Reporting Information [Line Items]
Revenue	101.9	104.1	210.9	211.4
Operating segments | International | Sales & Marketing
Segment Reporting Information [Line Items]
Revenue	54.1	59.6	113.8	122.2
Corporate and other
Segment Reporting Information [Line Items]
Revenue	0.0	0.0	0.0	(4.8)
Corporate and other | Finance & Risk
Segment Reporting Information [Line Items]
Revenue	0.0	0.0	0.0	(2.3)
Corporate and other | Sales & Marketing
Segment Reporting Information [Line Items]
Revenue	$ 0.0	$ 0.0	$ 0.0	$ (2.5)