Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Subscriber funds			$ 1,600	$ 1,700
First Data | First Data Subsidiary Merchant Matters
Loss Contingencies [Line Items]
Payment for legal settlement	$ 28	$ 40
Loss contingency accrual			32	$ 32
First Data | First Data Subsidiary Merchant Matters | Minimum
Loss Contingencies [Line Items]
Estimated range of exposure			0
First Data | First Data Subsidiary Merchant Matters | Maximum
Loss Contingencies [Line Items]
Estimated range of exposure			$ 50