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Settlement Assets and Obligations - Summary of Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2025 | Jun. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024
Summary of activity in allowance for credit losses |  |  |  |  |  |  |
Allowance for credit losses, Beginning Balance |  |  |  | $ 24.7 |  |  |
Allowance for credit losses, Ending Balance |  | $ 16.7 |  |  |  |  |
Receivables from agents and others |  |  |  |  |  |  |
Summary of activity in allowance for credit losses |  |  |  |  |  |  |
Allowance for credit losses, Beginning Balance |  | 13.1 | $ 18.5 | 24.7 | $ 11.7 | $ 11.9 | $ 15.4
Current period provision for expected credit losses | [1] | 5.4 | 4.6 | (3.8) | 12.8 | 3.0 |
Write-offs charged against the allowance |  | (5.8) | (13.2) | (10.4) | (8.8) | (8.4) | (5.2)
Recoveries of amounts previously written off |  | 3.9 | 2.2 | 7.8 | 6.9 | 3.3 | 2.3
Impacts of foreign currency exchange rates and other |  | 0.1 | 1.0 | 0.2 | (1.0) | 1.9 | (0.6)
Allowance for credit losses, Ending Balance |  | $ 16.7 | $ 13.1 | $ 18.5 | $ 21.6 | $ 11.7 | $ 11.9
[1] | Provision does not include losses from chargebacks or fraud associated with transactions initiated through the Company’s digital channels, as these losses are not credit-related.

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