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Legal Matters - Additional Information (Details)
$ in Millions
3 Months Ended 103 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Jan. 28, 2022
merchant
Loss Contingencies [Line Items]      
Deposits into the litigation escrow account | $ $ 250 $ 0  
U.S. Covered Litigation      
Loss Contingencies [Line Items]      
Provision for legal matters | $ 145 $ 0  
Deposits into the litigation escrow account | $ $ 250    
Interchange Multidistrict Litigation | Subsequent Event      
Loss Contingencies [Line Items]      
Settlement percentage     40.00%
U.K. Merchant Litigation | Subsequent Event      
Loss Contingencies [Line Items]      
Number of plaintiffs     800
Number of claims settled     150
Merchants with outstanding claims     650
U.K. Merchant Litigation | Threatened Litigation | Subsequent Event      
Loss Contingencies [Line Items]      
Number of plaintiffs     30