Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Non-cash stock-based compensation expense (benefit)			$ 91.8	$ (45.5)
Capitalized compensation cost			20.4	13.9
Software and Capitalized Software Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Capitalized compensation cost	$ 6.6	$ 5.1	$ 20.4	$ 13.9

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Paycom Software, Inc. 10-Q