v3.24.4
Commitments, Contingencies and Guarantees (Schedule of Maximum Potential Counterparty Exposures Related to Settlement Guarantees and Merchant Chargeback Guarantee) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Merchant Chargeback Guarantees [Member]      
Loss Contingencies [Line Items]      
Aggregate sales transaction volume [1] $ 257,611 $ 256,237 $ 223,360
[1] Represents transactions processed on the Discover Network for which a potential liability exists that, in aggregate, can differ from credit card sales volume.