v3.26.1
Off-balance Sheet Lending-related Financial Instruments, Guarantees, and Other Commitments - Summary (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments $ 1,896,313 $ 1,817,307
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,308,031  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 309,990  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 236,210  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 42,082  
Off-balance sheet lending-related financial commitments, Carrying value 6,205 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 106,000 104,000
Total Consumer    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 1,273,547 1,221,353
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,149,423  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 111,048  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,233  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 9,843  
Off-balance sheet lending-related financial commitments, Carrying value 2,503 2,537
Total consumer, excluding credit card    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 49,116 43,587
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 31,167  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 4,873  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,233  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 9,843  
Off-balance sheet lending-related financial commitments, Carrying value 303 337
Residential real estate    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 33,163 28,998
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 19,183  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 4,869  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 3,226  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 5,885  
Off-balance sheet lending-related financial commitments, Carrying value 293 327
Auto and other    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 15,953 14,589
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 11,984  
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 7  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 3,958  
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 1,224,431 1,177,766
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 1,118,256  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 106,175  
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 2,200 2,200
Total wholesale    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 622,766 595,954
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 158,608  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 198,942  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 232,977  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 32,239  
Off-balance sheet lending-related financial commitments, Carrying value 3,702 3,741
Other unfunded commitments to extend credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 585,120 561,506
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 135,675  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 190,403  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 227,905  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 31,137  
Off-balance sheet lending-related financial commitments, Carrying value 3,021 3,112
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Risk participations for other unfunded commitments to extend credit 116 181
Standby letters of credit and other financial guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 32,934 29,919
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 19,049  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 8,227  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 4,998  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 660  
Off-balance sheet lending-related financial commitments, Carrying value 666 616
Other guarantees and commitments, Carrying value 460 441
Off balance sheet lending related financial instruments guarantees and other commitments - supplemental information    
Risk participations for standby letters of credit and other financial guarantees 12,000 9,200
Other letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Total lending-related commitments 4,712 4,529
Off-balance sheet lending-related financial commitments, Contractual amount, Expires in 1 year or less 3,884  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 1 year through 3 years 312  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 3 years through 5 years 74  
Off-balance sheet lending-related financial commitments, Contractual amount, Expires after 5 years 442  
Off-balance sheet lending-related financial commitments, Carrying value 15 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 765 514
Securities lending indemnification agreements and guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 470,285 405,910
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 470,285  
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 500,700 431,900
Derivatives qualifying as guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 52,889 49,031
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 5,233  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 519  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 9,336  
Other guarantees and commitments, Contractual amount, Expires after 5 years 37,801  
Other guarantees and commitments, Carrying value 212 (12)
Unsettled resale and securities borrowed agreements    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 127,772 137,072
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 127,737  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 35  
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 4 0
Unsettled repurchase and securities loaned agreements    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 109,513 52,895
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 108,941  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 572  
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 36 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 2,236 2,015
Loan sale and securitization-related indemnifications, Loans sold with recourse, Carrying value 19 19
Exchange & clearing house guarantees and commitments    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Other guarantees and commitments, Contractual amount 316,489 433,537
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 316,489  
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 28,398 13,238
Other guarantees and commitments, Contractual amount, Expires in 1 year or less 16,666  
Other guarantees and commitments, Contractual amount, Expires after 1 year through 3 years 5,220  
Other guarantees and commitments, Contractual amount, Expires after 3 years through 5 years 275  
Other guarantees and commitments, Contractual amount, Expires after 5 years 6,237  
Other guarantees and commitments, Carrying value $ 12 $ 15