v3.24.2
Customer Funds - Amortized Cost and Fair Value of Investment Security Available for Sale (Detail) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]    
Due in one year or less, Cost $ 3,002.2  
Due in one to three years, Cost 986.0  
Due in three to five years, Cost 773.5  
Due after five years, Cost 264.4  
Invested customer funds, Cost 5,026.1 $ 5,043.9
Due in one year or less, Fair Value 2,997.3  
Due in one to three years, Fair Value 947.8  
Due in three to five years, Fair Value 754.4  
Due after five years, Fair Value 262.2  
Invested customer funds, Fair Value $ 4,961.7 $ 4,979.0