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Commitments and Contingencies (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Loss Contingencies [Line Items]
Subscriber funds	$ 1,400	$ 1,300
Subsidiary Merchant Matters | Minimum
Loss Contingencies [Line Items]
Estimated range of exposure	0
Subsidiary Merchant Matters | Maximum
Loss Contingencies [Line Items]
Estimated range of exposure	120
First Data | First Data Subsidiary Merchant Matters
Loss Contingencies [Line Items]
Loss contingency accrual	$ 38	$ 43

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