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Related Party Transactions - Related Party Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Related Party Transaction [Line Items]
Operating expenses		$ 3.8		$ 9.7
Trasimene Capital Management, LLC
Related Party Transaction [Line Items]
Acquisition related fees	$ 8.3		$ 8.3
Related party payable	$ 1.1		$ 1.1
Data entry, indexing services and other operating expenses
Related Party Transaction [Line Items]
Operating expenses		2.6		6.6
Corporate services
Related Party Transaction [Line Items]
Operating expenses		$ 1.2		$ 3.1