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INVESTMENT SECURITIES (Tables)
 3 Months Ended
Mar. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost and Fair Value of Securities Available for Sale
The amortized cost and fair value of AFS debt securities are presented in the table below. There was no ACL associated with the AFS portfolio at March 31, 2025 and December 31, 2024. Accrued interest receivable on AFS debt securities totaled $14.4 million at March 31, 2025 and $14.3 million at December 31, 2024, and is excluded from the estimate of credit losses and assessed separately in other assets in the Consolidated Balance Sheets. Accordingly, we have excluded accrued interest receivable from both the fair value and amortized cost basis of AFS debt securities.
TABLE 3.1
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities AFS:
March 31, 2025
U.S. Treasury$274 $1 $— $275 
U.S. government agencies50 — — 50 
U.S. government-sponsored enterprises303 — (1)302 
Residential MBS:
Agency MBS709 3 (14)698 
Agency collateralized mortgage obligations761 — (83)678 
Agency commercial MBS1,430 10 (25)1,415 
States of the U.S. and political subdivisions (municipals)21 — (2)19 
Other debt securities40 — — 40 
Total debt securities AFS$3,588 $14 $(125)$3,477 
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities AFS:
December 31, 2024
U.S. Treasury$274 $1 $(1)$274 
U.S. government agencies53 — — 53 
U.S. government-sponsored enterprises302 — (2)300 
Residential MBS:
Agency MBS714 — (20)694 
Agency collateralized mortgage obligations796 — (98)698 
Agency commercial MBS1,420 3 (35)1,388 
States of the U.S. and political subdivisions (municipals)24 — (2)22 
Other debt securities37 — — 37 
Total debt securities AFS$3,620 $4 $(158)$3,466 
Schedule of Amortized Cost and Fair Value of Securities Held to Maturity
The amortized cost and fair value of HTM debt securities are presented in the following table. The ACL for the HTM portfolio was $0.24 million and $0.25 million at March 31, 2025 and December 31, 2024, respectively. Accrued interest receivable on HTM debt securities totaled $14.0 million and $14.6 million at March 31, 2025 and December 31, 2024, respectively, and is excluded from the estimate of credit losses and assessed separately in other assets in the Consolidated Balance Sheets. Accordingly, we have excluded accrued interest receivable from both the fair value and amortized cost basis of HTM debt securities.
TABLE 3.2
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities HTM:
March 31, 2025
U.S. Treasury$1 $— $— $1 
U.S. government-sponsored enterprises29 — — 29 
Residential MBS:
Agency MBS865 1 (79)787 
Agency collateralized mortgage obligations689 — (81)608 
Agency commercial MBS1,439 8 (32)1,415 
States of the U.S. and political subdivisions (municipals)989 — (110)879 
Other debt securities17 — (1)16 
Total debt securities HTM$4,029 $9 $(303)$3,735 
(in millions)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
 Value
Debt Securities HTM:
December 31, 2024
U.S. Treasury$1 $— $— $1 
U.S. government-sponsored enterprises29 — — 29 
Residential MBS:
Agency MBS901 1 (96)806 
Agency collateralized mortgage obligations714 — (95)619 
Agency commercial MBS1,326 2 (44)1,284 
States of the U.S. and political subdivisions (municipals)992 — (103)889 
Other debt securities16 — — 16 
Total debt securities HTM$3,979 $3 $(338)$3,644 
Schedule of Amortized Cost and Fair Value of Securities, by Contractual Maturities
As of March 31, 2025, the amortized cost and fair value of debt securities, by contractual maturities, were as follows:
TABLE 3.3
Available for SaleHeld to Maturity
(in millions)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Due in one year or less$212 $212 $34 $34 
Due after one year but within five years430 429 78 75 
Due after five years but within ten years24 24 227 209 
Due after ten years22 21 697 607 
688 686 1,036 925 
Residential MBS:
Agency MBS709 698 865 787 
Agency collateralized mortgage obligations761 678 689 608 
Agency commercial MBS1,430 1,415 1,439 1,415 
Total debt securities$3,588 $3,477 $4,029 $3,735 
Schedule of Securities Pledged as Collateral
Following is information relating to investment securities pledged:
TABLE 3.4
(dollars in millions)March 31,
2025		December 31,
2024
Securities pledged (carrying value):
To secure public deposits, trust deposits and for other purposes as required by law$6,219 $6,271 
As collateral for short-term borrowings184 182 
Securities pledged as a percent of total securities85.3 %86.7 %
Schedule of Fair Values and Unrealized Losses of Impaired Securities, Segregated by Length of Impairment
Following are summaries of the fair values of AFS debt securities in an unrealized loss position for which an ACL has not been recorded, segregated by security type and length of time in a continuous loss position:
TABLE 3.5
Less than 12 Months12 Months or MoreTotal
(dollars in millions)#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses
Debt Securities AFS
March 31, 2025
U.S. Treasury1 $25 $— 2 $75 $— 3 $100 $— 
U.S. government agencies4 9 — 10 23 — 14 32 — 
U.S. government-sponsored enterprises— — — 7 127 (1)7 127 (1)
Residential MBS:
Agency MBS3 — — 92 329 (14)95 329 (14)
Agency collateralized mortgage obligations— — — 66 678 (83)66 678 (83)
Agency commercial MBS8 200 (3)20 356 (22)28 556 (25)
States of the U.S. and political subdivisions (municipals)— — — 9 19 (2)9 19 (2)
Other debt securities— — — 4 10 — 4 10 — 
Total 16 $234 $(3)210 $1,617 $(122)226 $1,851 $(125)
Less than 12 Months12 Months or MoreTotal
(dollars in millions)#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses		#Fair
 Value		Unrealized
Losses
Debt Securities AFS
December 31, 2024
U.S. Treasury3 $74 $(1)2 $75 $— 5 $149 $(1)
U.S. government agencies6 11 — 12 25 — 18 36 — 
U.S. government-sponsored enterprises2 75 — 7 126 (2)9 201 (2)
Residential MBS:
Agency MBS9 235 (1)92 355 (19)101 590 (20)
Agency collateralized mortgage obligations— — — 66 698 (98)66 698 (98)
Agency commercial MBS23 709 (8)20 359 (27)43 1,068 (35)
States of the U.S. and political subdivisions (municipals)— — — 10 22 (2)10 22 (2)
Other debt securities— — — 4 10 — 4 10 — 
Total43 $1,104 $(10)213 $1,670 $(148)256 $2,774 $(158)