Quarterly report [Sections 13 or 15(d)]

FAIR VALUES OF ASSETS AND LIABILITIES - Recurring Basis (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Assets measured at fair value on a recurring basis    
Trading account securities $ 477 $ 53
Available-for-sale securities 27,839 27,273
Loans held for sale 555 652
Loans Accounted for Under FVO 175 173
Gross amounts of recognized assets 507 610
Derivative assets netting (359) (344)
Net amounts of assets presented in the condensed consolidated balance sheets 148 266
Short-term borrowings 664 199
Liabilities measured at fair value on a recurring basis    
Long-term debt [1] 18,096 16,374
Gross amounts of recognized liabilities 598 668
Gross amounts offset in the unaudited consolidated balance sheets (145) (90)
Derivative liabilities 453 578
U.S. Treasury    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 6,639 6,556
Other agencies    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 123 130
Residential MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 10,029 10,017
Commercial MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,795 1,752
Municipal securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 3,962 3,988
Corporate debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,052 109
Asset-backed securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 298 311
Private-label CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 109 1,055
Fair Value, Recurring    
Assets measured at fair value on a recurring basis    
Trading account securities 477 53
Available-for-sale securities 27,839 27,273
Other securities 31 31
Loans held for sale 555 652
Loans Accounted for Under FVO 175 173
MSRs 564 573
Gross amounts of recognized assets   266
Derivative assets netting (359) (344)
Net amounts of assets presented in the condensed consolidated balance sheets 148  
Assets held in trust for deferred compensation plans 187 191
Short-term borrowings 524  
Liabilities measured at fair value on a recurring basis    
Long-term debt 1,143 821
Gross amounts of recognized liabilities   578
Gross amounts offset in the unaudited consolidated balance sheets (145) (90)
Derivative liabilities 453  
Fair Value, Recurring | U.S. Treasury    
Assets measured at fair value on a recurring basis    
Trading account securities 348 1
Available-for-sale securities 6,639 6,556
Fair Value, Recurring | Other agencies    
Assets measured at fair value on a recurring basis    
Trading account securities 129 52
Available-for-sale securities 123 130
Fair Value, Recurring | Residential MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 10,029 10,017
Fair Value, Recurring | Residential CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 3,822 3,345
Fair Value, Recurring | Commercial MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,795 1,752
Fair Value, Recurring | Municipal securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 3,962 3,988
Fair Value, Recurring | Corporate debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,052 1,055
Fair Value, Recurring | Asset-backed securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 298 311
Fair Value, Recurring | Private-label CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 109 109
Fair Value, Recurring | Other securities/sovereign debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 10 10
Fair Value, Recurring | Level 1    
Assets measured at fair value on a recurring basis    
Trading account securities 348 1
Available-for-sale securities 6,639 6,556
Other securities 29 29
Loans held for sale 0 0
Loans Accounted for Under FVO 0 0
MSRs 0 0
Gross amounts of recognized assets 0 0
Assets held in trust for deferred compensation plans 187 191
Short-term borrowings 514  
Liabilities measured at fair value on a recurring basis    
Long-term debt 0 0
Gross amounts of recognized liabilities 0 0
Fair Value, Recurring | Level 1 | U.S. Treasury    
Assets measured at fair value on a recurring basis    
Trading account securities 348 1
Available-for-sale securities 6,639 6,556
Fair Value, Recurring | Level 1 | Other agencies    
Assets measured at fair value on a recurring basis    
Trading account securities 0 0
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Residential MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Residential CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Commercial MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Municipal securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Corporate debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Asset-backed securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Private-label CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 1 | Other securities/sovereign debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 2    
Assets measured at fair value on a recurring basis    
Trading account securities 129 52
Available-for-sale securities 17,202 16,693
Other securities 2 2
Loans held for sale 555 652
Loans Accounted for Under FVO 112 112
MSRs 0 0
Gross amounts of recognized assets 500 606
Assets held in trust for deferred compensation plans 0 0
Short-term borrowings 10  
Liabilities measured at fair value on a recurring basis    
Long-term debt 1,143 821
Gross amounts of recognized liabilities 594 666
Fair Value, Recurring | Level 2 | U.S. Treasury    
Assets measured at fair value on a recurring basis    
Trading account securities 0 0
Available-for-sale securities 0 0
Fair Value, Recurring | Level 2 | Other agencies    
Assets measured at fair value on a recurring basis    
Trading account securities 129 52
Available-for-sale securities 123 130
Fair Value, Recurring | Level 2 | Residential MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 10,029 10,017
Fair Value, Recurring | Level 2 | Residential CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 3,822 3,345
Fair Value, Recurring | Level 2 | Commercial MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,795 1,752
Fair Value, Recurring | Level 2 | Municipal securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 33 34
Fair Value, Recurring | Level 2 | Corporate debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 1,052 1,055
Fair Value, Recurring | Level 2 | Asset-backed securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 251 262
Fair Value, Recurring | Level 2 | Private-label CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 87 88
Fair Value, Recurring | Level 2 | Other securities/sovereign debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 10 10
Fair Value, Recurring | Level 3    
Assets measured at fair value on a recurring basis    
Trading account securities 0 0
Available-for-sale securities 3,998 4,024
Other securities 0  
Loans held for sale 0 0
Loans Accounted for Under FVO 63 61
MSRs 564 573
Gross amounts of recognized assets 7 4
Assets held in trust for deferred compensation plans 0 0
Short-term borrowings 0  
Liabilities measured at fair value on a recurring basis    
Long-term debt 0 0
Gross amounts of recognized liabilities 4 2
Fair Value, Recurring | Level 3 | U.S. Treasury    
Assets measured at fair value on a recurring basis    
Trading account securities 0 0
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Other agencies    
Assets measured at fair value on a recurring basis    
Trading account securities 0 0
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Residential MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Residential CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Commercial MBS    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Municipal securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 3,929 3,954
Fair Value, Recurring | Level 3 | Corporate debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 0 0
Fair Value, Recurring | Level 3 | Asset-backed securities    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 47 49
Fair Value, Recurring | Level 3 | Private-label CMO    
Assets measured at fair value on a recurring basis    
Available-for-sale securities 22 21
Fair Value, Recurring | Level 3 | Other securities/sovereign debt    
Assets measured at fair value on a recurring basis    
Available-for-sale securities $ 0 $ 0
[1] Includes VIE balances in net loans and leases, other assets, long-term debt, and other liabilities of $998 million, $260 million, $911 million, and $98 million, respectively, at March 31, 2025, and $1.1 billion, $264 million, $1.0 billion, $109 million, respectively, at December 31, 2024. See Note 14 - “Variable Interest Entities” for additional information.