Related Party Transactions - Schedule of Revenue from Portfolio Companies (Detail) - Dayforce [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
American Blue Ribbon Holdings, LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 1.6	$ 1.8	$ 1.8
Black Knight Sports and Entertainment, LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0.2
Essex Technology Group, LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0.5	0.5	0.5
Guaranteed Rate, Inc. [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0.8	0.5
Hightower Holding ,LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0.2	0.1
Philips Feed Services, Inc [Member]
Related Party Transaction [Line Items]
Revenue from related parties	0.3	0.3	0.3
System One Holdings LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties		$ 0.3	$ 0.1
Ten-X,LLC [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.4