v3.26.1
Reportable Operating Segments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting [Line Items]          
Number of reportable segments not disclosed flag     segments    
Total non-interest revenues $ 14,988 $ 13,669 $ 29,203 $ 26,467  
Revenue from contracts with customers 11,212 10,321 21,729 19,947  
Interest income 6,607 6,264 13,272 12,399  
Interest expense 1,958 2,077 3,931 4,043  
Net interest income 4,649 4,187 9,341 8,356  
Total revenues net of interest expense 19,637 17,856 38,544 34,823  
Provisions for credit losses 1,084 1,405 2,336 2,555  
Total revenues net of interest expense after provisions for credit losses 18,553 16,451 36,208 32,268  
Card Member rewards, business development and Card Member services 8,755 7,508 17,212 14,743  
Marketing 1,650 1,555 3,130 3,041  
Salaries and employee benefits and other operating expenses 4,077 3,838 8,017 7,604  
Total expenses 14,482 12,901 28,359 25,388  
Pretax income 4,071 3,550 7,849 6,880  
Total assets 308,203 295,556 308,203 295,556 $ 300,052
Operating Segments          
Segment Reporting [Line Items]          
Total non-interest revenues 15,000 13,667 29,198 26,481  
Revenue from contracts with customers 11,222 10,328 21,749 19,963  
Interest income 6,136 5,665 12,291 11,238  
Interest expense 1,395 1,402 2,768 2,754  
Net interest income 4,743 4,263 9,522 8,484  
Total revenues net of interest expense 19,742 17,930 38,720 34,965  
Provisions for credit losses 1,084 1,404 2,336 2,554  
Total revenues net of interest expense after provisions for credit losses 18,656 16,526 36,385 32,411  
Card Member rewards, business development and Card Member services 8,750 7,497 17,198 14,720  
Marketing 1,644 1,549 3,116 3,027  
Salaries and employee benefits and other operating expenses 3,623 3,380 6,963 6,625  
Total expenses 14,017 12,426 27,277 24,372  
Pretax income 4,640 4,100 9,108 8,039  
Total assets 260,663 240,852 260,663 240,852  
Corporate and Other          
Segment Reporting [Line Items]          
Total non-interest revenues (11) 2 4 (14)  
Revenue from contracts with customers (10) (7) (20) (16)  
Interest income 471 599 981 1,161  
Interest expense 564 675 1,162 1,289  
Net interest income (93) (76) (181) (128)  
Total revenues net of interest expense (104) (74) (177) (142)  
Provisions for credit losses 0 1 0 1  
Total revenues net of interest expense after provisions for credit losses (104) (75) (177) (143)  
Card Member rewards, business development and Card Member services 5 11 14 23  
Marketing 7 6 14 14  
Salaries and employee benefits and other operating expenses 453 458 1,055 979  
Total expenses 465 475 1,083 1,016  
Pretax income (569) (550) (1,260) (1,159)  
Total assets 47,540 54,704 47,540 54,704  
USCS | Operating Segments          
Segment Reporting [Line Items]          
Total non-interest revenues 6,229 5,540 12,031 10,783  
Revenue from contracts with customers 4,346 3,903 8,334 7,537  
Interest income 4,052 3,795 8,124 7,558  
Interest expense 757 782 1,508 1,539  
Net interest income 3,295 3,013 6,616 6,019  
Total revenues net of interest expense 9,524 8,553 18,647 16,802  
Provisions for credit losses 498 829 1,129 1,460  
Total revenues net of interest expense after provisions for credit losses 9,025 7,724 17,518 15,342  
Card Member rewards, business development and Card Member services 4,745 3,967 9,350 7,849  
Marketing 813 800 1,577 1,565  
Salaries and employee benefits and other operating expenses 1,403 1,281 2,770 2,520  
Total expenses 6,961 6,048 13,697 11,934  
Pretax income 2,065 1,676 3,821 3,408  
Total assets 123,404 113,876 123,404 113,876  
CS | Operating Segments          
Segment Reporting [Line Items]          
Total non-interest revenues 3,591 3,422 6,999 6,687  
Revenue from contracts with customers 3,097 2,975 6,028 5,803  
Interest income 1,343 1,240 2,688 2,442  
Interest expense 432 450 864 882  
Net interest income 912 790 1,824 1,560  
Total revenues net of interest expense 4,503 4,212 8,823 8,247  
Provisions for credit losses 353 360 733 689  
Total revenues net of interest expense after provisions for credit losses 4,149 3,852 8,091 7,558  
Card Member rewards, business development and Card Member services 1,994 1,790 3,980 3,536  
Marketing 379 331 690 668  
Salaries and employee benefits and other operating expenses 806 826 1,635 1,613  
Total expenses 3,179 2,947 6,305 5,817  
Pretax income 970 905 1,786 1,741  
Total assets 65,567 62,152 65,567 62,152  
ICS | Operating Segments          
Segment Reporting [Line Items]          
Total non-interest revenues 3,261 2,947 6,425 5,593  
Revenue from contracts with customers 2,051 1,876 4,028 3,564  
Interest income 733 620 1,461 1,216  
Interest expense 375 335 735 641  
Net interest income 358 285 725 575  
Total revenues net of interest expense 3,619 3,232 7,150 6,168  
Provisions for credit losses 223 210 460 402  
Total revenues net of interest expense after provisions for credit losses 3,396 3,022 6,690 5,766  
Card Member rewards, business development and Card Member services 1,683 1,452 3,234 2,764  
Marketing 352 322 684 622  
Salaries and employee benefits and other operating expenses 884 783 1,514 1,534  
Total expenses 2,919 2,557 5,432 4,920  
Pretax income 477 465 1,258 846  
Total assets 52,291 46,500 52,291 46,500  
GMNS | Operating Segments          
Segment Reporting [Line Items]          
Total non-interest revenues 1,919 1,758 3,743 3,418  
Revenue from contracts with customers 1,728 1,574 3,359 3,059  
Interest income 8 10 18 22  
Interest expense (169) (165) (339) (308)  
Net interest income 178 175 357 330  
Total revenues net of interest expense 2,096 1,933 4,100 3,748  
Provisions for credit losses 10 5 14 3  
Total revenues net of interest expense after provisions for credit losses 2,086 1,928 4,086 3,745  
Card Member rewards, business development and Card Member services 328 288 634 571  
Marketing 100 96 165 172  
Salaries and employee benefits and other operating expenses 530 490 1,044 958  
Total expenses 958 874 1,843 1,701  
Pretax income 1,128 1,054 2,243 2,044  
Total assets $ 19,401 $ 18,324 $ 19,401 $ 18,324