v3.25.2
Fair Value Measurements - Changes in Fair Value of Level 3 Assets and Liabilities (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income Net income Net income Net income
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income Net income Net income Net income
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income Net income Net income Net income
Derivatives liability        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total liabilities, ending balance $ (180) $ (339) $ (180) $ (339)
Level 3        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total assets, beginning balance 82 180 210 138
Assets, Total Realized/Unrealized Gains (Losses) Included in Earnings 68 (8) 20 46
Assets, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) 0 (1) 1 (2)
Assets, Purchases 0 19 2 36
Assets, Issuances 0 0 0 0
Assets, Settlements 0 (3) (119) (19)
Assets, Transfers Into Level 3 2 6 (4) 4
Assets Transfers out of Level 3 (33) (8) 9 (18)
Total assets, ending balance 119 185 119 185
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 37 (7) 25 33
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 (1) 1 (2)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total liabilities, beginning balance (2,241) (2,290) (2,444) (2,212)
Total Realized/Unrealized Gains (Losses) Included in Earnings (100) (35) (97) (146)
Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 (4)
Purchases 0 0 0 0
Issuances (343) (549) (662) (950)
Settlements 186 302 447 618
Transfers Into Level 3 (854) (35) (1,200) (48)
Transfers Out of Level 3 737 111 1,341 246
Total liabilities, ending balance (2,615) (2,496) (2,615) (2,496)
Current Period Unrealized Gains (Losses) Still Held Included in Earnings (44) (6) (40) (69)
Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 (4)
Level 3 | Interest rate contracts        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Derivatives, net, Beginning Balance (3) (3) (3) (4)
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Earnings 2 0 2 (1)
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 0
Derivatives, net, Purchases 0 0 0 0
Derivatives, net, Issuances 0 0 0 0
Derivatives, net, Settlements 0 0 0 0
Derivatives, net, Transfers into Level 3 0 0 0 2
Derivatives, net, Transfers out of Level 3 0 0 0 0
Derivatives, net, Ending Balance (1) (3) (1) (3)
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 1 0 2 (1)
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 0
Level 3 | Foreign exchange contracts        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Derivatives, net, Beginning Balance 0 0 0 0
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Earnings 2 0 2 0
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 0
Derivatives, net, Purchases 0 0 0 0
Derivatives, net, Issuances 0 0 0 0
Derivatives, net, Settlements 0 0 0 0
Derivatives, net, Transfers into Level 3 (3) 0 (3) 0
Derivatives, net, Transfers out of Level 3 0 0 0 0
Derivatives, net, Ending Balance (1) 0 (1) 0
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 2 0 2 0
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 0
Level 3 | Equity contracts - bilateral OTC(2)        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Derivatives, net, Beginning Balance (30) 67 (18) 21
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Earnings 66 (7) 25 52
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 0
Derivatives, net, Purchases 0 0 0 0
Derivatives, net, Issuances 0 0 0 0
Derivatives, net, Settlements (7) (3) (14) 0
Derivatives, net, Transfers into Level 3 (8) 0 (14) (7)
Derivatives, net, Transfers out of Level 3 (33) (8) 9 (17)
Derivatives, net, Ending Balance (12) 49 (12) 49
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 35 (6) 22 34
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 0
Level 3 | Credit contracts - bilateral OTC(2)        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Derivatives, net, Beginning Balance (1) 0 (1) 1
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Earnings 0 (1) 0 (4)
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 0
Derivatives, net, Purchases 0 0 0 0
Derivatives, net, Issuances 0 0 0 0
Derivatives, net, Settlements 0 0 0 (1)
Derivatives, net, Transfers into Level 3 0 (3) 0 (3)
Derivatives, net, Transfers out of Level 3 0 0 3
Derivatives, net, Ending Balance (1) (4) (1) (4)
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 0 (1) 0 (1)
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 0
Level 3 | Other Contracts        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Derivatives, net, Beginning Balance (26) (30) (26) (35)
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Earnings (2) 0 (9) (2)
Derivatives, net, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 0 0 0
Derivatives, net, Purchases 0 0 0 0
Derivatives, net, Issuances 0 0 0 0
Derivatives, net, Settlements 10 9 17 16
Derivatives, net, Transfers into Level 3 0 0 0 0
Derivatives, net, Transfers out of Level 3 0 0 0 0
Derivatives, net, Ending Balance (18) (21) (18) (21)
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 0 0 0 0
Derivatives, net, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) $ 0 $ 0 $ 0 $ 0
Asset-backed securities available-for-sale        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax Other comprehensive income (loss), net of tax
Asset-backed securities available-for-sale | Level 3        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total assets, beginning balance $ 94 $ 102 $ 97 $ 104
Assets, Total Realized/Unrealized Gains (Losses) Included in Earnings 0 0 0 0
Assets, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) 0 (1) 1 (2)
Assets, Purchases 0 0 0 0
Assets, Issuances 0 0 0 0
Assets, Settlements (2) 0 (6) (1)
Assets, Transfers Into Level 3 0 0 0 0
Assets Transfers out of Level 3 0 0 0 0
Total assets, ending balance 92 101 92 101
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 0 0 0 0
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) $ 0 $ (1) $ 1 $ (2)
Mortgage servicing rights        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (loss) Other income (loss) Other income (loss) Other income (loss)
Mortgage servicing rights | Level 3        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total assets, beginning balance $ 7 $ 19 $ 7 $ 19
Assets, Total Realized/Unrealized Gains (Losses) Included in Earnings 0 0 0 0
Assets, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) 0 0 0 0
Assets, Purchases 0 0 0 0
Assets, Issuances 0 0 0 0
Assets, Settlements 0 0 0 0
Assets, Transfers Into Level 3 0 0 0 0
Assets Transfers out of Level 3 0 0 0 0
Total assets, ending balance 7 19 7 19
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Earnings (1) 0 (1) 0
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 0 0 0
Derivative assets        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total assets, ending balance 147 360 147 360
Domestic deposits | Level 3        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total liabilities, beginning balance (295) (331) (291) (293)
Total Realized/Unrealized Gains (Losses) Included in Earnings (9) (3) (10) (7)
Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 (1) 0 (3)
Purchases 0 0 0 0
Issuances (75) (70) (90) (144)
Settlements 10 13 24 48
Transfers Into Level 3 (175) (1) (243) (1)
Transfers Out of Level 3 124 7 190 14
Total liabilities, ending balance (420) (386) (420) (386)
Current Period Unrealized Gains (Losses) Still Held Included in Earnings (2) 1 (1) (2)
Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 (1) 0 (3)
Long-term debt | Level 3        
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total liabilities, beginning balance (1,946) (1,959) (2,153) (1,919)
Total Realized/Unrealized Gains (Losses) Included in Earnings (91) (32) (87) (139)
Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income 0 1 0 (1)
Purchases 0 0 0 0
Issuances (268) (479) (572) (806)
Settlements 176 289 423 570
Transfers Into Level 3 (679) (34) (957) (47)
Transfers Out of Level 3 613 104 1,151 232
Total liabilities, ending balance (2,195) (2,110) (2,195) (2,110)
Current Period Unrealized Gains (Losses) Still Held Included in Earnings (42) (7) (39) (67)
Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) 0 1 0 (1)
Loans held for sale | Loans | Level 3        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Total assets, beginning balance 41 25 154 32
Assets, Total Realized/Unrealized Gains (Losses) Included in Earnings 0 0 0 1
Assets, Total Realized/Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) 0 0 0 0
Assets, Purchases 0 19 2 36
Assets, Issuances 0 0 0 0
Assets, Settlements (1) (9) (116) (33)
Assets, Transfers Into Level 3 13 9 13 12
Assets Transfers out of Level 3 0 0 (4)
Total assets, ending balance 53 44 53 44
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Earnings 0 0 0 1
Assets, Current Period Unrealized Gains (Losses) Still Held Included in Other Comprehensive Income (Loss) $ 0 $ 0 $ 0 $ 0