Revenue from Customers - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Concentration Risk
Reduction of revenue arising from revenue sharing	$ 1.3	$ 1.2	$ 2.4	$ 1.7
Transferred over Time
Concentration Risk
Revenue recognition methodology (as a percent)	44.00%	53.00%	50.00%	62.00%
Transferred at Point in Time
Concentration Risk
Revenue recognition methodology (as a percent)	56.00%	47.00%	50.00%	38.00%
Revenue from Contract with Customer Benchmark | Customer Concentration Risk | UNITED STATES
Concentration Risk
Concentration risk (as a percent)	89.00%	100.00%	92.00%	100.00%
Customer 1 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Concentration Risk
Concentration risk (as a percent)	15.90%	28.60%
Customer 2 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Concentration Risk
Concentration risk (as a percent)			10.30%	18.90%
Market Data Solutions | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Concentration Risk
Concentration risk (as a percent)	84.00%	100.00%	90.00%	100.00%