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AOCI (Tables) | 6 Months Ended
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Jun. 30, 2026
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
AOCI Includes the After-Tax Change in Unrecognized Net Costs | 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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