v3.26.3
Off-balance Sheet Lending-related Financial Instruments, Guarantees, and Other Commitments - Summary (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments $ 1,934,100 $ 1,817,307
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,337,715  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 306,877  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 247,340  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 42,168  
Off-balance sheet lending-related financial commitments, Carrying value 6,723 6,278
Apple Credit Card Portfolio | Credit Concentration Risk | Credit card    
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Credit exposure 107,000 104,000
Total Consumer    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 1,299,275 1,221,353
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,175,012  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 111,226  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,116  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 9,921  
Off-balance sheet lending-related financial commitments, Carrying value 2,675 2,537
Total consumer, excluding credit card    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 47,668 43,587
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 30,062  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 4,569  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,116  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 9,921  
Off-balance sheet lending-related financial commitments, Carrying value 375 337
Residential real estate    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 31,661 28,998
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 18,094  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 4,565  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,103  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 5,899  
Off-balance sheet lending-related financial commitments, Carrying value 365 327
Auto and other    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 16,007 14,589
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 11,968  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 4  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 13  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 4,022  
Off-balance sheet lending-related financial commitments, Carrying value 10 10
Credit card    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 1,251,607 1,177,766
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,144,950  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 106,657  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 0  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 0  
Off-balance sheet lending-related financial commitments, Carrying value 2,300 2,200
Total wholesale    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 634,825 595,954
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 162,703  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 195,651  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 244,224  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 32,247  
Off-balance sheet lending-related financial commitments, Carrying value 4,048 3,741
Other unfunded commitments to extend credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 590,603 561,506
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 135,894  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 185,024  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 238,480  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 31,205  
Off-balance sheet lending-related financial commitments, Carrying value 3,339 3,112
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Risk participations for other unfunded commitments to extend credit 110 181
Standby letters of credit and other financial guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 38,741 29,919
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 22,276  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 10,139  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 5,662  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 664  
Off-balance sheet lending-related financial commitments, Carrying value 695 616
Other guarantees and commitments, Carrying value 514 441
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Risk participations for standby letters of credit and other financial guarantees 20,200 9,200
Other letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 5,481 4,529
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 4,533  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 488  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 82  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 378  
Off-balance sheet lending-related financial commitments, Carrying value 14 13
Other guarantees and commitments, Carrying value 0 0
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Risk participations for other letters of credit 978 514
Securities lending indemnification agreements and guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 457,430 405,910
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 457,430  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 0  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 0  
Other guarantees and commitments, Contractual amount, Expires after 5 years 0  
Other guarantees and commitments, Carrying value 0 0
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Collateral held in support of securities lending indemnification agreements 487,900 431,900
Derivatives qualifying as guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 49,265 49,031
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 1,381  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 686  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 9,263  
Other guarantees and commitments, Contractual amount, Expires after 5 years 37,935  
Other guarantees and commitments, Carrying value 223 (12)
Unsettled resale and securities borrowed agreements    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 160,847 137,072
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 157,511  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 2,086  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 1,250  
Other guarantees and commitments, Contractual amount, Expires after 5 years 0  
Other guarantees and commitments, Carrying value (3) 0
Unsettled repurchase and securities loaned agreements    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 137,634 52,895
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 136,968  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 666  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 0  
Other guarantees and commitments, Contractual amount, Expires after 5 years 0  
Other guarantees and commitments, Carrying value 0 0
Mortgage repurchase liability    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Loan sale and securitization-related indemnifications, Mortgage repurchase liability, Carrying value 37 37
Loans sold with recourse    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Loan sale and securitization-related indemnifications, Loans sold with recourse, Contractual amount 2,475 2,015
Loan sale and securitization-related indemnifications, Loans sold with recourse, Carrying value 22 19
Exchange & clearing house guarantees and commitments    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 349,526 433,537
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 349,526  
Other guarantees and commitments, Carrying value 0 0
Other guarantees and commitments    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 29,125 13,238
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 17,193  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 4,643  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 554  
Other guarantees and commitments, Contractual amount, Expires after 5 years 6,735  
Other guarantees and commitments, Carrying value $ 17 $ 15