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INVESTMENT SECURITIES AND OTHER SECURITIES (Tables)
 12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Unrealized Gain (Loss) on Investments The following tables provide amortized cost, fair value, and gross unrealized gains and losses by investment category.
Unrealized
(dollar amounts in millions)Amortized
Cost (1)(2)
Gross
Gains
Gross
Losses
Fair Value
At December 31, 2025
Available-for-sale securities:
U.S. Treasury$4,590 $45 $— $4,635 
Federal agencies:
Residential MBS11,031 3 (1,365)9,669 
Residential CMO5,496 9 (308)5,197 
Commercial MBS2,488 — (657)1,831 
Other agencies153 — (3)150 
Total U.S. Treasury, federal agency, and other agency securities23,758 57 (2,333)21,482 
Municipal securities4,215 9 (81)4,143 
Corporate debt193 — (15)178 
Asset-backed securities229 — (8)221 
Private-label CMO105 — (7)98 
Other securities/sovereign debt10 — — 10 
Total available-for-sale securities$28,510 $66 $(2,444)$26,132 
Held-to-maturity securities:
U.S. Treasury$2,349 $19 $— $2,368 
Federal agencies:
Residential MBS7,718 1 (941)6,778 
Residential CMO3,865 5 (520)3,350 
Commercial MBS1,278 — (184)1,094 
Other agencies47 — (2)45 
Total U.S. Treasury, federal agency, and other agency securities
15,257 25 (1,647)13,635 
Municipal securities1 — — 1 
Total held-to-maturity securities$15,258 $25 $(1,647)$13,636 
Other securities, at cost:
Non-marketable equity securities:
FRB stock
$616 $— $— $616 
FHLB stock
288 — — 288 
Other non-marketable equity securities48 — — 48 
Other securities, at fair value:
Mutual funds30 — — 30 
Equity securities12 — — 12 
Total other securities$994 $— $— $994 
(1)Amortized cost amounts exclude accrued interest receivable, which is recorded within accrued income and other receivables on the Consolidated Balance Sheets. At December 31, 2025, accrued interest receivable on available-for-sale securities and held-to-maturity securities totaled $106 million and $44 million, respectively.
(2)Excluded from the amortized cost are portfolio level basis adjustments for securities designated in fair value hedges under the portfolio layer method. The basis adjustments totaled $177 million and represent a reduction to the amortized cost of the securities being hedged. The securities being hedged under the portfolio layer method are primarily Residential CMO and Residential MBS securities.
Unrealized
(dollar amounts in millions)
Amortized
Cost (1)(2)
Gross
Gains		Gross
Losses		Fair Value
At December 31, 2024
Available-for-sale securities:
U.S. Treasury$6,588 $11 $(43)$6,556 
Federal agencies:
Residential MBS11,988 — (1,971)10,017 
Residential CMO3,778 1 (434)3,345 
Commercial MBS2,519 — (767)1,752 
Other agencies135 — (5)130 
Total U.S. Treasury, federal agency, and other agency securities25,008 12 (3,220)21,800 
Municipal securities4,119 1 (132)3,988 
Corporate debt1,157 — (102)1,055 
Asset-backed securities330 — (19)311 
Private-label CMO119 — (10)109 
Other securities/sovereign debt10 — — 10 
Total available-for-sale securities$30,743 $13 $(3,483)$27,273 
Held-to-maturity securities:
U.S. Treasury$2,045 $— $(22)$2,023 
Federal agencies:
Residential MBS8,533 — (1,336)7,197 
Residential CMO4,309 3 (691)3,621 
Commercial MBS1,407 — (231)1,176 
Other agencies73 — (5)68 
Total U.S. Treasury, federal agency, and other agency securities
16,367 3 (2,285)14,085 
Municipal securities1 — — 1 
Total held-to-maturity securities$16,368 $3 $(2,285)$14,086 
Other securities, at cost:
Non-marketable equity securities:
FRB stock
$521 $— $— $521 
FHLB stock
246 — — 246 
Other non-marketable equity securities25 — — 25 
Other securities, at fair value:
Mutual funds29 — — 29 
Equity securities1 1 — 2 
Total other securities$822 $1 $— $823 
(1)Amortized cost amounts exclude accrued interest receivable, which is recorded within accrued income and other receivables on the Consolidated Balance Sheets. At December 31, 2024, accrued interest receivable on available-for-sale securities and held-to-maturity securities totaled $89 million and $46 million, respectively.
(2)Excluded from the amortized cost are portfolio level basis adjustments for securities designated in fair value hedges under the portfolio layer method. The basis adjustments totaled $458 million and represent a reduction to the amortized cost of the securities being hedged. The securities being hedged under the portfolio layer method are primarily Residential CMO and Residential MBS securities.
Investments Classified by Contractual Maturity Date
The following table provides the amortized cost and fair value of securities by contractual maturity. Expected maturities may differ from contractual maturities as issuers may have the right to call or prepay obligations with or without incurring penalties.
At December 31,
20252024
(dollar amounts in millions)
Amortized Cost
Fair Value
Amortized Cost
Fair Value
Available-for-sale securities:
Under 1 year$1,369 $1,365 $3,620 $3,624 
After 1 year through 5 years5,581 5,595 5,993 5,844 
After 5 years through 10 years1,899 1,784 1,857 1,732 
After 10 years19,661 17,388 19,273 16,073 
Total available-for-sale securities$28,510 $26,132 $30,743 $27,273 
Held-to-maturity securities:
Under 1 year$603 $604 $255 $256 
After 1 year through 5 years1,773 1,791 1,818 1,796 
After 5 years through 10 years144 134 65 60 
After 10 years12,738 11,107 14,230 11,974 
Total held-to-maturity securities$15,258 $13,636 $16,368 $14,086 
Schedule of Unrealized Loss on Investments
The following tables provide detail on investment securities with unrealized losses aggregated by investment category and the length of time the individual securities have been in a continuous loss position.
Less than 12 MonthsOver 12 MonthsTotal
(dollar amounts in millions)Fair
Value		Gross Unrealized
Losses		Fair
Value		Gross Unrealized
Losses		Fair
Value		Gross Unrealized
Losses
At December 31, 2025
Available-for-sale securities:
U.S. Treasury
$— $— $439 $— $439 $— 
Federal agencies:
Residential MBS
55 — 9,185 (1,365)9,240 (1,365)
Residential CMO
51 — 2,665 (308)2,716 (308)
Commercial MBS23 — 1,782 (657)1,805 (657)
Other agencies15 — 74 (3)89 (3)
Total U.S. Treasury, federal agency, and other agency securities
144 — 14,145 (2,333)14,289 (2,333)
Municipal securities1,043 (14)1,892 (67)2,935 (81)
Corporate debt
2 — 176 (15)178 (15)
Asset-backed securities9 — 207 (8)216 (8)
Private-label CMO
— — 79 (7)79 (7)
Total temporarily impaired available-for-sale securities$1,198 $(14)$16,499 $(2,430)$17,697 $(2,444)
Held-to-maturity securities:
U.S. Treasury
$— $— $289 $— $289 $— 
Federal agencies:
Residential MBS
— — 6,694 (941)6,694 (941)
Residential CMO
48 — 2,956 (520)3,004 (520)
Commercial MBS— — 1,094 (184)1,094 (184)
Other agencies— — 45 (2)45 (2)
Total U.S. Treasury, federal agency, and other agency securities
48 — 11,078 (1,647)11,126 (1,647)
Municipal securities— — 1 — 1 — 
Total temporarily impaired held-to-maturity securities$48 $— $11,079 $(1,647)$11,127 $(1,647)
Less than 12 MonthsOver 12 MonthsTotal
(dollar amounts in millions)Fair
Value		Gross Unrealized
Losses		Fair
Value		Gross Unrealized
Losses		Fair
Value		Gross Unrealized
Losses
At December 31, 2024
Available-for-sale securities:
U.S. Treasury$3,153 $(43)$— $— $3,153 $(43)
Federal agencies:
Residential MBS
275 (5)9,676 (1,966)9,951 (1,971)
Residential CMO
243 (1)2,802 (433)3,045 (434)
Commercial MBS— — 1,752 (767)1,752 (767)
Other agencies21 — 69 (5)90 (5)
Total U.S. Treasury, federal agency, and other agency securities3,692 (49)14,299 (3,171)17,991 (3,220)
Municipal securities985 (25)2,336 (107)3,321 (132)
Corporate debt
— — 1,053 (102)1,053 (102)
Asset-backed securities49 — 263 (19)312 (19)
Private-label CMO
— — 87 (10)87 (10)
Total temporarily impaired available-for-sale securities$4,726 $(74)$18,038 $(3,409)$22,764 $(3,483)
Held-to-maturity securities:
U.S. Treasury$1,581 $(22)$— $— $1,581 $(22)
Federal agencies:
Residential MBS
99 (2)7,097 (1,334)7,196 (1,336)
Residential CMO
163 (1)3,152 (690)3,315 (691)
Commercial MBS— — 1,176 (231)1,176 (231)
Other agencies— — 69 (5)69 (5)
Total U.S. Treasury, federal agency, and other agency securities1,843 (25)11,494 (2,260)13,337 (2,285)
Municipal securities— — 1 — 1 — 
Total temporarily impaired held-to-maturity securities$1,843 $(25)$11,495 $(2,260)$13,338 $(2,285)