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Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2024
Other Comprehensive Income [Abstract] |
Other Comprehensive Income | OTHER C OMPREHENSIVE I NCOME Details of other comprehensive income (loss) are as follows: Table 83: Other Comprehensive Income (Loss)
| Year ended December 31
| 2024 | 2023 | 2022
In millions | Pre-tax | Tax effect | After-tax | Pre-tax | Tax effect | After-tax | Pre-tax | Tax effect | After-tax
Debt securities |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on securities | $ | (363) |  | $ | 89 |  | $ | (274) |  | $ | 840 |  | $ | (202) |  | $ | 638 |  | $ | (10,866) |  | $ | 2,561 |  | $ | (8,305) |
Less: Net realized gains (losses) reclassified to earnings (a) | (1,328) |  | 323 |  | (1,005) |  | (913) |  | 217 |  | (696) |  | (723) |  | 171 |  | (552) |
Net change | 965 |  | (234) |  | 731 |  | 1,753 |  | (419) |  | 1,334 |  | (10,143) |  | 2,390 |  | (7,753) |
Cash flow hedge derivatives |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on cash flow hedge derivatives | (790) |  | 192 |  | (598) |  | (237) |  | 65 |  | (172) |  | (3,536) |  | 833 |  | (2,703) |
Less: Net realized gains (losses) reclassified to earnings (a) | (1,317) |  | 320 |  | (997) |  | (1,540) |  | 376 |  | (1,164) |  | (260) |  | 61 |  | (199) |
Net change | 527 |  | (128) |  | 399 |  | 1,303 |  | (311) |  | 992 |  | (3,276) |  | 772 |  | (2,504) |
Pension and other postretirement benefit plan adjustments |  |  |  |  |  |  |  |  |
Net pension and other postretirement benefit plan activity and other reclassified to earnings (b) | 21 |  | (5) |  | 16 |  | 166 |  | (40) |  | 126 |  | (363) |  | 85 |  | (278) |
Net change | 21 |  | (5) |  | 16 |  | 166 |  | (40) |  | 126 |  | (363) |  | 85 |  | (278) |
Other |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on other transactions | 1 |  |  |  | 1 |  | 5 |  | 3 |  | 8 |  | (5) |  | (41) |  | (46) |
Net change | 1 |  |  | 1 |  | 5 |  | 3 |  | 8 |  | (5) |  | (41) |  | (46) |
Total other comprehensive income (loss) | $ | 1,514 |  | $ | (367) |  | $ | 1,147 |  | $ | 3,227 |  | $ | (767) |  | $ | 2,460 |  | $ | (13,787) |  | $ | 3,206 |  | $ | (10,581) |
(a)Reclassifications for pre-tax debt securities and cash flow hedges are recorded in Interest income and Noninterest income on the Consolidated Income Statement. (b)Reclassifications include amortization of actuarial losses (gains) and amortization of prior period services costs (credits) which are recorded in Noninterest expense on the Consolidated Income Statement. Table 84: Accumulated Other Comprehensive Income (Loss) Components
In millions, after-tax | Debt securities |  | Cash flow hedge derivatives |  | Pension and other postretirement benefit plan adjustments |  | Other |  | Accumulated other comprehensive income
Balance at December 31, 2021 | $ | 589 |  |  | $ | (201) |  |  | $ | 27 |  |  | $ | (6) |  |  | $ | 409 |
Net activity | (7,753) |  |  | (2,504) |  |  | (278) |  |  | (46) |  |  | (10,581) |
Balance at December 31, 2022 | $ | (7,164) |  |  | $ | (2,705) |  |  | $ | (251) |  |  | $ | (52) |  |  | $ | (10,172) |
Net activity | 1,334 |  |  | 992 |  |  | 126 |  |  | 8 |  |  | 2,460 |
Balance at December 31, 2023 (a) | $ | (5,830) |  |  | $ | (1,713) |  |  | $ | (125) |  |  | $ | (44) |  |  | $ | (7,712) |
Net activity | 731 |  |  | 399 |  |  | 16 |  |  | 1 |  |  | 1,147 |
Balance at December 31, 2024 (a) | $ | (5,099) |  |  | $ | (1,314) |  |  | $ | (109) |  |  | $ | (43) |  |  | $ | (6,565) |
(a)AOCI included pretax losses of $275 million and $293 million from derivatives that hedged the purchase of investment securities classified as held-to-maturity at December 31, 2024 and December 31, 2023, respectively.

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