Customer Funds - Amortized Cost and Fair Value of Investment Security Available for Sale (Detail) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||
| Due in one year or less, Cost | $ 2,129.6 | |
| Due in one to three years, Cost | 910.1 | |
| Due in three to five years, Cost | 726.6 | |
| Due after five years, Cost | 459.6 | |
| Invested customer funds, Amortized Cost | 4,225.9 | $ 5,003.8 |
| Due in one year or less, Fair Value | 2,126.3 | |
| Due in one to three years, Fair Value | 902.5 | |
| Due in three to five years, Fair Value | 739.5 | |
| Due after five years, Fair Value | 465.1 | |
| Invested customer funds, Fair Value | $ 4,233.4 | $ 4,978.2 |
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After Five Years Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After Five Years Fair Value No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After One Through Three Years Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After One Through Three Years Fair Value No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After Three Through Five Years Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Available For Sale Securities Debt Maturities After Three Through Five Years Fair Value No definition available.
|
| X | ||||||||||
- Definition Invested customer funds amortized cost. No definition available.
|
| X | ||||||||||
- Definition Invested customer funds fair value. No definition available.
|
| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|