Customer Funds - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Investments Debt And Equity Securities [Line Items]
Investment income from invested customer funds included in recurring revenue	$ 55.3	$ 60.7
Maximum [Member] \| Maturities ranging from one to 120 days [Member]
Investments Debt And Equity Securities [Line Items]
Average customer trust funds held in liquidity portfolios, Percentage	55.00%
Maximum [Member] \| Maturities ranging from 120 days to 10 years [Member]
Investments Debt And Equity Securities [Line Items]
Average customer trust funds held in fixed income portfolios, Percentage	55.00%
Minimum [Member] \| Maturities ranging from one to 120 days [Member]
Investments Debt And Equity Securities [Line Items]
Average customer trust funds held in liquidity portfolios, Percentage	45.00%
Minimum [Member] \| Maturities ranging from 120 days to 10 years [Member]
Investments Debt And Equity Securities [Line Items]
Average customer trust funds held in fixed income portfolios, Percentage	45.00%