Revenue - Summary of Disaggregation of Revenue (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,513.7	$ 1,246.2	$ 1,024.2
Cloud Dayforce Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,111.1	815.2	626.6
Cloud Powerpay Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	100.3	93.2	86.3
Cloud Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,211.4	908.4	712.9
Other Recurring [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	85.9	139.2	137.8
Recurring Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,297.3	1,047.6	850.7
Professional Services and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 216.4	$ 198.6	$ 173.5