v3.25.2
Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail)
$ in Millions
 6 Months Ended
Jun. 30, 2025
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance $ 2,546.3
Ending balance 2,702.3
Foreign Currency Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (297.4)
Other comprehensive income before income taxes and reclassifications 65.4
Other comprehensive income 65.4
Ending balance (232.0)
Unrealized Gain (Loss) from Invested Customer Funds [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (27.6)
Other comprehensive income before income taxes and reclassifications 32.4
Income tax expense (8.4)
Other comprehensive income 24.0
Ending balance (3.6)
Pension Liability Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (157.7)
Other comprehensive income before income taxes and reclassifications 0.7
Income tax expense (2.5)
Reclassifications to earnings 9.0
Other comprehensive income 7.2
Ending balance (150.5)
Accumulated Other Comprehensive Income (Loss) [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (482.7)
Other comprehensive income before income taxes and reclassifications 98.5
Income tax expense (10.9)
Reclassifications to earnings 9.0
Other comprehensive income 96.6
Ending balance $ (386.1)