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Service Fees and Other Revenue and Other Expenses
 9 Months Ended
Sep. 30, 2026
Service Fees and Other Revenue and Other Expenses [Abstract]  
Service Fees and Other Revenue and Other Expenses Service Fees and Other Revenue and Other Expenses
The following is a detail of Service fees and other revenue for the three and nine months ended September 30, 2026 and 2025:
Table 11.1: Components of Service Fees and Other Revenue
Three Months Ended
September 30,		Nine Months Ended
September 30,
(Millions)2026202520262025
Foreign currency-related revenue$508 $447 $1,474 $1,264 
Network partnership revenue496 456 1,425 1,302 
Loyalty coalition, merchant and other service fees436 407 1,348 1,251 
Delinquency fees253 245 757 720 
Travel commissions and fees
189 167 515 450 
Other fees and revenues
101 254 378 539 
Total Service fees and other revenue$1,984 $1,976 $5,896 $5,526 
The following is a detail of Other expenses for the three and nine months ended September 30, 2026 and 2025:
Table 11.2: Components of Other Expense
Three Months Ended
September 30,		Nine Months Ended
September 30,
(Millions)2026202520262025
Data processing and equipment
$858 $751 $2,442 $2,176 
Professional services675 623 1,842 1,755 
Gain on sale of GBTG equity method investment (a)
(982)— (982)— 
Other (b)
764 406 1,206 1,181 
Total Other expenses$1,315 $1,780 $4,508 $5,112 
(a)Refer to Note 1 for additional information.
(b)Includes a $400 million increase in legal reserves for the three months ended September 30, 2026 pertaining to the portion of the OCC civil money penalty not reserved for prior to this period as well as previously-disclosed, unrelated legal proceedings. Refer to Note 7 for additional information.