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Investment Securities (Tables)
 12 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Summary The following table summarizes our available for sale and held to maturity portfolios by major security type:
Table 47: Investment Securities Summary (a)(b)
December 31, 2022December 31, 2021
In millionsAmortized
Cost (c)		UnrealizedFair
Value		Amortized
Cost (c)		UnrealizedFair
Value
GainsLossesGainsLosses
Securities Available for Sale
U.S. Treasury and government agencies$9,196 $10 $(836)$8,370 $46,210 $324 $(370)$46,164 
Residential mortgage-backed
Agency32,114 13 (3,304)28,823 67,326 695 (389)67,632 
Non-agency697 131 (9)819 927 231 1,158 
Commercial mortgage-backed
Agency1,845  (170)1,675 1,740 39 (6)1,773 
Non-agency1,325  (69)1,256 3,423 31 (18)3,436 
Asset-backed103 27 (1)129 6,380 60 (31)6,409 
Other3,288 44 (245)3,087 4,792 186 (14)4,964 
Total securities available for sale $48,568 $225 $(4,634)$44,159 $130,798 $1,566 $(828)$131,536 
Securities Held to Maturity
U.S. Treasury and government agencies$36,571 $6 $(1,617)$34,960 $814 $76 $890 
Residential mortgage-backed
Agency45,271 74 (3,095)42,250 
Non-agency276  (21)255 
Commercial mortgage-backed
Agency848 4 (26)826 
Non-agency1,667  (40)1,627 
Asset-backed7,188 6 (140)7,054 
Other3,354 25 (72)3,307 612 27 $(7)632 
Total securities held to maturity (d)$95,175 $115 $(5,011)$90,279 $1,426 $103 $(7)$1,522 
(a) At December 31, 2022, the accrued interest associated with our held to maturity and available for sale portfolios totaled $282 million and $144 million, respectively. The comparable amounts at December 31, 2021 were $5 million and $322 million, respectively. These amounts are included in Other assets on the Consolidated Balance Sheet.
(b) Credit ratings represent a primary credit quality indicator used to monitor and manage credit risk. Of our total securities portfolio, 97% and 96% were rated AAA/AA as of December 31, 2022 and 2021, respectively.
(c) Amortized cost is presented net of allowance of $142 million and is primarily related to non-agency commercial mortgage-backed securities for securities available for sale and $7 million for securities held to maturity at December 31, 2022. The comparable amounts at December 31, 2021 were $130 million and $3 million, respectively.
(d) Held to maturity securities transferred from available for sale are included in held to maturity at fair value at the time of the transfer. The amortized cost of held to maturity securities included net unrealized losses of $5.1 billion, at December 31, 2022, related to securities transferred, which are offset in AOCI, net of tax.
Gross Unrealized Loss and Fair Value of Securities Available for Sale Without an Allowance for Credit Losses
Table 48: Gross Unrealized Loss and Fair Value of Securities Available for Sale Without an Allowance for Credit Losses
Unrealized loss position
less than 12 months		Unrealized loss position
12 months or more		Total
In millionsUnrealized
Loss		Fair
Value		Unrealized
Loss		Fair
Value		Unrealized
Loss		Fair
Value
December 31, 2022
U.S. Treasury and government agencies$(601)$5,868 $(235)$2,208 $(836)$8,076 
Residential mortgage-backed
Agency(1,744)19,036 (1,560)8,971 (3,304)28,007 
Non-agency(6)112 (2)17 (8)129 
Commercial mortgage-backed
Agency(125)1,283 (45)372 (170)1,655 
Non-agency(44)750 (18)394 (62)1,144 
Asset-backed  (1)5 (1)5 
Other(96)1,418 (112)1,144 (208)2,562 
Total securities available for sale$(2,616)$28,467 $(1,973)$13,111 $(4,589)$41,578 
December 31, 2021
U.S. Treasury and government agencies$(370)$32,600 $(370)$32,600 
Residential mortgage-backed
Agency(369)41,521 $(20)$1,489 (389)43,010 
Commercial mortgage-backed
Agency(5)451 (1)60 (6)511 
Non-agency(4)1,453 (3)474 (7)1,927 
Asset-backed(29)3,465 (2)188 (31)3,653 
Other(13)1,405 (13)1,405 
Total securities available for sale$(790)$80,895 $(26)$2,211 $(816)$83,106 
Gains (losses) on Sales Of Securities Available for Sale
Information related to gross realized securities gains and losses from the sales of securities is set forth in the following table:

Table 49: Gains (Losses) on Sales of Securities Available for Sale
Year ended December 31
In millions		Gross GainsGross LossesNet Gains (Losses)Tax Expense (Benefit)
2022$11 $(18)$(7)$(1)
2021$360 $(296)$64 $13 
2020$307 $(2)$305 $64 
Contractual Maturity of Securities
The following table presents, by remaining contractual maturity, the amortized cost, fair value and weighted-average yield of debt securities at December 31, 2022:
Table 50: Contractual Maturity of Debt Securities
December 31, 20221 Year or
Less		After 1 Year
through 5 Years		After 5 Years
through 10 Years		After 10
Years		Total
Dollars in millions
Securities Available for Sale
U.S. Treasury and government agencies$2,121 $2,958 $2,101 $2,016 $9,196 
Residential mortgage-backed
Agency2 75 3,304 28,733 32,114 
Non-agency7 690 697 
Commercial mortgage-backed
Agency66 410 1,075 294 1,845 
Non-agency120 264 941 1,325 
Asset-backed  10 93 103 
Other128 2,309 695 156 3,288 
Total securities available for sale at amortized cost$2,317 $5,872 $7,456 $32,923 $48,568 
Fair value$2,296 $5,505 $6,762 $29,596 $44,159 
Weighted-average yield, GAAP basis (a)2.39 %1.81 %2.27 %2.87 %2.63 %
Securities Held to Maturity
U.S. Treasury and government agencies$862 $27,076 $7,831 $802 $36,571 
Residential mortgage-backed
Agency8 283 44,980 45,271 
Non-agency276 276 
Commercial mortgage-backed
Agency584 264 848 
Non-agency114 1,553 1,667 
Asset-backed253 2,134 2,117 2,684 7,188 
Other159 1,169 579 1,447 3,354 
Total securities held to maturity at amortized cost$1,274 $30,501 $11,394 $52,006 $95,175 
Fair value$1,264 $29,439 $10,799 $48,777 $90,279 
Weighted-average yield, GAAP basis (a)2.31 %1.35 %2.41 %2.86 %2.31 %
(a)        Weighted-average yields are based on amortized cost with effective yields weighted for the contractual maturity of each security. Actual maturities and yields may differ as certain securities may be prepaid.
Fair Value of Securities Pledged and Accepted as Collateral The following table presents the fair value of securities that have been either pledged to or accepted from others to collateralize outstanding borrowings:
Table 51: Fair Value of Securities Pledged and Accepted as Collateral
In millionsDecember 31
2022		December 31
2021
Pledged to others$24,708 $27,349 
Accepted from others:
Permitted by contract or custom to sell or repledge $1,266 $707 
Permitted amount repledged to others$1,266 $707