v3.26.1
Business Segments and Revenue from Contracts with Customers - Additional Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Segment Reporting Information [Line Items]    
Number of operating segments | segment 3  
Marketing $ 1,497 $ 1,202
Credit card marketing expense 1,300 $ 1,000
Minimum | Commercial Banking    
Segment Reporting Information [Line Items]    
Customer net revenue range 20  
Maximum | Commercial Banking    
Segment Reporting Information [Line Items]    
Customer net revenue range $ 2,000