v3.25.1
Derivative Financial Instruments - Classifications and Hedging Relationships (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount $ 430,639 $ 416,320
Derivative Asset, Fair Value, Gross 2,437 2,824
Derivative Liability, Fair Value, Gross (3,860) (4,700)
Derivative Asset [Abstract]    
Amounts subject to master netting arrangements and exchange traded derivatives (1,191) (1,408)
Cash collateral (received) posted for amounts subject to master netting arrangements (190) (450)
Net Amount in Consolidated Balance Sheets 1,056 966
Derivative Liability [Abstract]    
Amounts subject to master netting arrangements and exchange traded derivatives 1,191 1,408
Cash collateral (received) posted for amounts subject to master netting arrangements $ 906 1,006
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets (including $1,324 and $1,271 at fair value, respectively)  
Net amount $ (1,763) (2,286)
Cash flow hedges | Interest rate contracts | Swap | Commercial loans    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 66,585 66,585
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross (1) 0
Fair value hedges | Interest rate contracts    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 47,843 47,494
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross 0 0
Fair value hedges | Interest rate contracts | Swap | Long-term debt    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 17,993 17,368
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross 0 0
Fair value hedges | Interest rate contracts | Swap | AFS securities    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 29,850 30,126
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross 0 0
Not designated as hedges    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 316,211 302,241
Derivative Asset, Fair Value, Gross 2,437 2,824
Derivative Liability, Fair Value, Gross (3,859) (4,700)
Not designated as hedges | Client-related and other risk management    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 278,444 264,503
Derivative Asset, Fair Value, Gross 2,385 2,705
Derivative Liability, Fair Value, Gross (3,786) (4,624)
Not designated as hedges | Client-related and other risk management | Interest rate contracts | Swap    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 152,012 146,194
Derivative Asset, Fair Value, Gross 508 488
Derivative Liability, Fair Value, Gross (1,337) (1,706)
Not designated as hedges | Client-related and other risk management | Interest rate contracts | Purchased options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 10,079 11,321
Derivative Asset, Fair Value, Gross 25 29
Derivative Liability, Fair Value, Gross (1) (1)
Not designated as hedges | Client-related and other risk management | Interest rate contracts | Futures and forwards    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 4,418 4,782
Derivative Asset, Fair Value, Gross 5 1
Derivative Liability, Fair Value, Gross (2) (2)
Not designated as hedges | Client-related and other risk management | Interest rate contracts | Written Options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 10,554 9,623
Derivative Asset, Fair Value, Gross 17 16
Derivative Liability, Fair Value, Gross (40) (49)
Not designated as hedges | Client-related and other risk management | Foreign exchange contracts | Swap    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 9,732 7,397
Derivative Asset, Fair Value, Gross 120 128
Derivative Liability, Fair Value, Gross (89) (114)
Not designated as hedges | Client-related and other risk management | Foreign exchange contracts | Futures and forwards    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 20,142 21,966
Derivative Asset, Fair Value, Gross 210 311
Derivative Liability, Fair Value, Gross (203) (270)
Not designated as hedges | Client-related and other risk management | Foreign exchange contracts | Other    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 2,437 760
Derivative Asset, Fair Value, Gross 33 5
Derivative Liability, Fair Value, Gross (31) (4)
Not designated as hedges | Client-related and other risk management | Equity contracts | Purchased options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 14,506 11,956
Derivative Asset, Fair Value, Gross 876 1,366
Derivative Liability, Fair Value, Gross (27) (23)
Not designated as hedges | Client-related and other risk management | Equity contracts | Other    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 1,888 1,730
Derivative Asset, Fair Value, Gross 28 6
Derivative Liability, Fair Value, Gross (70) (41)
Not designated as hedges | Client-related and other risk management | Equity contracts | Written Options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 31,647 28,228
Derivative Asset, Fair Value, Gross 16 12
Derivative Liability, Fair Value, Gross (1,496) (2,102)
Not designated as hedges | Client-related and other risk management | Commodity Contract    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 11,048 10,988
Derivative Asset, Fair Value, Gross 509 318
Derivative Liability, Fair Value, Gross (488) (297)
Not designated as hedges | Client-related and other risk management | Credit Contract | Credit default swaps    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 917 685
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross 0 0
Not designated as hedges | Client-related and other risk management | Credit Contract | Total Return Swap    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 1,810 1,485
Derivative Asset, Fair Value, Gross 38 25
Derivative Liability, Fair Value, Gross 0 (13)
Not designated as hedges | Client-related and other risk management | Credit Contract | Risk participation agreements    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 7,254 7,388
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross (2) (2)
Not designated as hedges | MSR and mortgage banking | Interest rate contracts    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 37,767 37,738
Derivative Asset, Fair Value, Gross 52 119
Derivative Liability, Fair Value, Gross (73) (76)
Not designated as hedges | MSR and mortgage banking | Interest rate contracts | Swap    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 22,267 20,696
Derivative Asset, Fair Value, Gross 0 0
Derivative Liability, Fair Value, Gross 0 0
Not designated as hedges | MSR and mortgage banking | Interest rate contracts | Purchased options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 8,259 8,910
Derivative Asset, Fair Value, Gross 19 60
Derivative Liability, Fair Value, Gross (62) (46)
Not designated as hedges | MSR and mortgage banking | Interest rate contracts | Interest rate lock commitments    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 1,033 939
Derivative Asset, Fair Value, Gross 4 2
Derivative Liability, Fair Value, Gross (3) (13)
Not designated as hedges | MSR and mortgage banking | Interest rate contracts | When issued securities, forward rate agreements, forward commitments, and futures    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 4,909 5,261
Derivative Asset, Fair Value, Gross 3 25
Derivative Liability, Fair Value, Gross (7) (11)
Not designated as hedges | MSR and mortgage banking | Interest rate contracts | Written Options    
Derivative Instruments, Notional, Fair Value Assets and Liabilities[Line Items]    
Notional Amount 1,299 1,932
Derivative Asset, Fair Value, Gross 26 32
Derivative Liability, Fair Value, Gross $ (1) $ (6)