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Accumulated Other Comprehensive Loss | 12 Months Ended
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Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive Income (Loss) | ACCUMULATED OTHER COMPREHENSIVE LOSS The following table presents a reconciliation of the changes in the components of accumulated other comprehensive loss and details the components of other comprehensive (loss) income for the years ended December 31, 2024, 2023 and 2022, including the amount of income tax (benefit) expense allocated to each component of other comprehensive (loss) income.
(in millions) |  |  |  |  |
Years Ended December 31 | 2024 |  | 2023 |  | 2022
Accumulated net unrealized losses on investment securities: |  |  |  |  |
Balance at beginning of period, net of tax | $ | (2,043) |  |  | $ | (2,319) |  |  | $ | (99) |
Net unrealized holding (losses) gains arising during the period | (182) |  |  | 361 |  |  | (2,903) |
Less: (Benefit) provision for income taxes | (43) |  |  | 85 |  |  | (683) |
Net unrealized holding (losses) gains arising during the period, net of tax | (139) |  |  | 276 |  |  | (2,220) |
Less: |  |  |  |  |
Net realized losses included in net securities losses | 19 |  |  | — |  |  | — |
Less: Benefit for income taxes | 4 |  |  | — |  |  | — |
Reclassification adjustment for net securities losses included in net income, net of tax | 15 |  |  | — |  |  | — |
Change in net unrealized losses on investment securities, net of tax | (154) |  |  | 276 |  |  | (2,220) |
Balance at end of period, net of tax | $ | (2,197) |  |  | $ | (2,043) |  |  | $ | (2,319) |
Accumulated net losses on cash flow hedges: |  |  |  |  |
Balance at beginning of period, net of tax | $ | (605) |  |  | $ | (942) |  |  | $ | 55 |
Net cash flow hedge (losses) gains arising during the period | (624) |  |  | 34 |  |  | (1,329) |
Reclassification of loss related to de-designation of derivatives to other noninterest income | — |  |  | (195) |  |  | — |
Less: Benefit for income taxes | (181) |  |  | (38) |  |  | (313) |
Change in net cash flow hedge losses arising during the period, net of tax | (443) |  |  | (123) |  |  | (1,016) |
Less: |  |  |  |  |
Net cash flow losses included in interest and fees on loans | (629) |  |  | (576) |  |  | (25) |
Net amortization of unrealized losses related to de-designated derivatives included in interest and fees on loans | (8) |  |  | (26) |  |  | — |
Less: Benefit for income taxes | (185) |  |  | (142) |  |  | (6) |
Reclassification adjustment for net cash flow hedge losses included in net income, net of tax | (452) |  |  | (460) |  |  | (19) |
Change in net cash flow hedge losses, net of tax | 9 |  |  | 337 |  |  | (997) |
Balance at end of period, net of tax (a) | $ | (596) |  |  | $ | (605) |  |  | $ | (942) |
Accumulated defined benefit pension and other postretirement plans adjustment: |  |  |  |  |
Balance at beginning of period, net of tax | $ | (400) |  |  | $ | (481) |  |  | $ | (168) |
Actuarial gain (loss) arising during the period | 35 |  |  | 96 |  |  | (415) |
Less: Provision (benefit) for income taxes | 8 |  |  | 25 |  |  | (98) |
Net defined benefit pension and other postretirement plans adjustment arising during the period, net of tax | 27 |  |  | 71 |  |  | (317) |
Amounts recognized in other noninterest expenses: |  |  |  |  |
Amortization of actuarial net loss | 27 |  |  | 36 |  |  | 28 |
Amortization of prior service credit | (22) |  |  | (23) |  |  | (23) |
Total amounts recognized in other noninterest expenses | 5 |  |  | 13 |  |  | 5 |
Less: Provision for income taxes | — |  |  | 3 |  |  | 1 |
Adjustment for amounts recognized as components of net periodic benefit credit during the period, net of tax | 5 |  |  | 10 |  |  | 4 |
Change in defined benefit pension and other postretirement plans adjustment, net of tax | 32 |  |  | 81 |  |  | (313) |
Balance at end of period, net of tax | $ | (368) |  |  | $ | (400) |  |  | $ | (481) |
Total accumulated other comprehensive loss at end of period, net of tax | $ | (3,161) |  |  | $ | (3,048) |  |  | $ | (3,742) |
(a)The Corporation expects to reclassify $198 million of losses, net of tax, from accumulated other comprehensive loss to earnings over the next twelve months if interest yield curves and notional amounts remain at December 31, 2024 levels.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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