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AOCI | 6 Months Ended
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Jun. 30, 2026
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
AOCI | AOCI AOCI includes the after-tax change in unrecognized net costs related to defined benefit pension and OPEB plans as well as unrealized gains and losses on cash flow hedges, AFS securities, and HTM securities previously transferred from AFS securities.
(Dollars in millions) | Pension and OPEB Costs |  | Cash Flow Hedges |  | AFS Securities |  | HTM Securities |  | Other, net |  | Total
AOCI balance, April 1, 2025 | $ | (643) |  |  | $ | (432) |  |  | $ | (4,095) |  |  | $ | (2,075) |  |  | $ | (5) |  |  | $ | (7,250) |
OCI before reclassifications, net of tax | 1 |  |  | 205 |  |  | 69 |  |  | — |  |  | 5 |  |  | 280 |
Amounts reclassified from AOCI: |  |  |  |  |  |  |  |  |  |  |
Before tax | 1 |  |  | 92 |  |  | (66) |  |  | 71 |  |  | — |  |  | 98 |
Tax effect | — |  |  | 22 |  |  | (13) |  |  | 12 |  |  | — |  |  | 21 |
Amounts reclassified, net of tax | 1 |  |  | 70 |  |  | (53) |  |  | 59 |  |  | — |  |  | 77 |
Total OCI, net of tax | 2 |  |  | 275 |  |  | 16 |  |  | 59 |  |  | 5 |  |  | 357 |
AOCI balance, June 30, 2025 | $ | (641) |  |  | $ | (157) |  |  | $ | (4,079) |  |  | $ | (2,016) |  |  | $ | — |  |  | $ | (6,893) |
AOCI balance, April 1, 2026 | $ | (387) |  |  | $ | (572) |  |  | $ | (3,517) |  |  | $ | (1,862) |  |  | $ | 1 |  |  | $ | (6,337) |
OCI before reclassifications, net of tax | 1 |  |  | (505) |  |  | 39 |  |  | — |  |  | 2 |  |  | (463) |
Amounts reclassified from AOCI: |  |  |  |  |  |  |  |  |  |  |
Before tax | 1 |  |  | 54 |  |  | (11) |  |  | 67 |  |  | — |  |  | 111 |
Tax effect | 1 |  |  | 12 |  |  | (3) |  |  | 17 |  |  | — |  |  | 27 |
Amounts reclassified, net of tax | — |  |  | 42 |  |  | (8) |  |  | 50 |  |  | — |  |  | 84 |
Total OCI, net of tax | 1 |  |  | (463) |  |  | 31 |  |  | 50 |  |  | 2 |  |  | (379) |
AOCI balance, June 30, 2026 | $ | (386) |  |  | $ | (1,035) |  |  | $ | (3,486) |  |  | $ | (1,812) |  |  | $ | 3 |  |  | $ | (6,716) |
(Dollars in millions) | Pension and OPEB Costs |  | Cash Flow Hedges |  | AFS Securities |  | HTM Securities |  | Other, net |  | Total
AOCI balance, January 1, 2025 | $ | (648) |  |  | $ | (861) |  |  | $ | (4,573) |  |  | $ | (2,125) |  |  | $ | (6) |  |  | $ | (8,213) |
OCI before reclassifications, net of tax | 6 |  |  | 563 |  |  | 612 |  |  | — |  |  | 6 |  |  | 1,187 |
Amounts reclassified from AOCI: |  |  |  |  |  |  |  |  |  |  |
Before tax | 1 |  |  | 185 |  |  | (151) |  |  | 136 |  |  | — |  |  | 171 |
Tax effect | — |  |  | 44 |  |  | (33) |  |  | 27 |  |  | — |  |  | 38 |
Amounts reclassified, net of tax | 1 |  |  | 141 |  |  | (118) |  |  | 109 |  |  | — |  |  | 133 |
Total OCI, net of tax | 7 |  |  | 704 |  |  | 494 |  |  | 109 |  |  | 6 |  |  | 1,320 |
AOCI balance, June 30, 2025 | $ | (641) |  |  | $ | (157) |  |  | $ | (4,079) |  |  | $ | (2,016) |  |  | $ | — |  |  | $ | (6,893) |
AOCI balance, January 1, 2026 | $ | (381) |  |  | $ | (173) |  |  | $ | (3,306) |  |  | $ | (1,909) |  |  | $ | — |  |  | $ | (5,769) |
OCI before reclassifications, net of tax | (7) |  |  | (932) |  |  | (158) |  |  | — |  |  | 3 |  |  | (1,094) |
Amounts reclassified from AOCI: |  |  |  |  |  |  |  |  |  |  |
Before tax | 3 |  |  | 91 |  |  | (29) |  |  | 128 |  | — |  |  | 193 |
Tax effect | 1 |  |  | 21 |  |  | (7) |  |  | 31 |  | — |  |  | 46 |
Amounts reclassified, net of tax | 2 |  |  | 70 |  |  | (22) |  |  | 97 |  |  | — |  |  | 147 |
Total OCI, net of tax | (5) |  |  | (862) |  |  | (180) |  |  | 97 |  |  | 3 |  |  | (947) |
AOCI balance, June 30, 2026 | $ | (386) |  |  | $ | (1,035) |  |  | $ | (3,486) |  |  | $ | (1,812) |  |  | $ | 3 |  |  | $ | (6,716) |
Primary income statement location of amounts reclassified from AOCI | Other expense |  | Net interest income |  | Securities gains (losses) and Interest on securities |  | Interest on securities |  | Other income |  |

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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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