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Comprehensive income | 6 Months Ended
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Jun. 30, 2026
Equity [Abstract] |
Comprehensive income | 10. Comprehensive income The following table displays the components of other comprehensive income (loss) and amounts reclassified from accumulated other comprehensive income (loss) to net income during the three-month periods ended June 30, 2026 and 2025.
(Dollars in millions) | Investment Securities |  | Cash Flow Hedges |  | Defined Benefit Plans |  | Other |  | Total Amount Before Tax |  | Income Tax |  | Net
Balance — April 1, 2026 | $ | 9 |  |  | $ | 9 |  |  | $ | 80 |  |  | $ | (8) |  |  | $ | 90 |  |  | $ | (24) |  |  | $ | 66 |
Other comprehensive income (loss) before reclassifications: |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding losses, net | (134) |  |  | — |  |  | — |  |  | — |  |  | (134) |  |  | 35 |  |  | (99) |
Unrealized losses, net | — |  |  | (69) |  |  | — |  |  | — |  |  | (69) |  |  | 16 |  |  | (53) |
Total other comprehensive income (loss) before reclassifications | (134) |  |  | (69) |  |  | — |  |  | — |  |  | (203) |  |  | 51 |  |  | (152) |
Amounts reclassified from accumulated other comprehensive income (loss) that (increase) decrease net income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net yield adjustment from cash flow hedges currently in effect | — |  |  | (8) |  |  | — |  |  | — |  |  | (8) |  | (a) | 3 |  |  | (5) |
Amortization of prior service credit and actuarial gains | — |  |  | — |  |  | (2) |  |  | — |  |  | (2) |  | (b) | 1 |  |  | (1) |
Total other comprehensive income (loss) | (134) |  |  | (77) |  |  | (2) |  |  | — |  |  | (213) |  |  | 55 |  |  | (158) |
Balance — June 30, 2026 | $ | (125) |  |  | $ | (68) |  |  | $ | 78 |  |  | $ | (8) |  |  | $ | (123) |  |  | $ | 31 |  |  | $ | (92) |
Balance — April 1, 2025 | $ | (8) |  |  | $ | 9 |  |  | $ | 129 |  |  | $ | (9) |  |  | $ | 121 |  |  | $ | (31) |  |  | $ | 90 |
Other comprehensive income (loss) before reclassifications: |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains, net | 90 |  |  | — |  |  | — |  |  | — |  |  | 90 |  |  | (23) |  |  | 67 |
Unrealized gains, net | — |  |  | 43 |  |  | — |  |  | — |  |  | 43 |  |  | (11) |  |  | 32 |
Other | — |  |  | — |  |  | — |  |  | 4 |  |  | 4 |  |  | (1) |  |  | 3 |
Total other comprehensive income (loss) before reclassifications | 90 |  |  | 43 |  |  | — |  |  | 4 |  |  | 137 |  |  | (35) |  |  | 102 |
Amounts reclassified from accumulated other comprehensive income (loss) that (increase) decrease net income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net yield adjustment from cash flow hedges currently in effect | — |  |  | 33 |  |  | — |  |  | — |  |  | 33 |  | (a) | (9) |  |  | 24 |
Amortization of prior service credit and actuarial gains | — |  |  | — |  |  | (2) |  |  | — |  |  | (2) |  | (b) | 1 |  |  | (1) |
Total other comprehensive income (loss) | 90 |  |  | 76 |  |  | (2) |  |  | 4 |  |  | 168 |  |  | (43) |  |  | 125 |
Balance — June 30, 2025 | $ | 82 |  |  | $ | 85 |  |  | $ | 127 |  |  | $ | (5) |  |  | $ | 289 |  |  | $ | (74) |  |  | $ | 215 |
__________________________________________________________________________________ (a)Included in Interest income in the Consolidated Statement of Income. (b)Included in Other costs of operations in the Consolidated Statement of Income. Accumulated other comprehensive income (loss), net during the three-month periods ended June 30, 2026 and 2025 consisted of the following.
(Dollars in millions) | Investment Securities |  | Cash Flow Hedges |  | Defined Benefit Plans |  | Other |  | Total
Balance — April 1, 2026 | $ | 6 |  |  | $ | 7 |  |  | $ | 60 |  |  | $ | (7) |  |  | $ | 66 |
Net gain (loss) during period | (99) |  |  | (58) |  |  | (1) |  |  | — |  |  | (158) |
Balance — June 30, 2026 | $ | (93) |  |  | $ | (51) |  |  | $ | 59 |  |  | $ | (7) |  |  | $ | (92) |
Balance — April 1, 2025 | $ | (6) |  |  | $ | 7 |  |  | $ | 96 |  |  | $ | (7) |  |  | $ | 90 |
Net gain (loss) during period | 67 |  |  | 56 |  |  | (1) |  |  | 3 |  |  | 125 |
Balance — June 30, 2025 | $ | 61 |  |  | $ | 63 |  |  | $ | 95 |  |  | $ | (4) |  |  | $ | 215 |
10. Comprehensive income The following table displays the components of other comprehensive income (loss) and amounts reclassified from accumulated other comprehensive income (loss) to net income during the six months ended June 30, 2026 and 2025.
(Dollars in millions) | Investment Securities |  | Cash Flow Hedges |  | Defined Benefit Plans |  | Other |  | Total Amount Before Tax |  | Income Tax |  | Net
Balance — January 1, 2026 | $ | 208 |  |  | $ | 90 |  |  | $ | 81 |  |  | $ | (7) |  |  | $ | 372 |  |  | $ | (95) |  |  | $ | 277 |
Other comprehensive income (loss) before reclassifications: |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding losses, net | (329) |  |  | — |  |  | — |  |  | — |  |  | (329) |  |  | 84 |  |  | (245) |
Unrealized losses, net | — |  |  | (145) |  |  | — |  |  | — |  |  | (145) |  |  | 36 |  |  | (109) |
Other | — |  |  | — |  |  | — |  |  | (1) |  |  | (1) |  |  | — |  |  | (1) |
Total other comprehensive income (loss) before reclassifications | (329) |  |  | (145) |  |  | — |  |  | (1) |  |  | (475) |  |  | 120 |  |  | (355) |
Amounts reclassified from accumulated other comprehensive income (loss) that (increase) decrease net income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net gains realized in net income | (4) |  |  | — |  |  | — |  |  | — |  |  | (4) |  | (a) | 1 |  |  | (3) |
Net yield adjustment from cash flow hedges currently in effect | — |  |  | (13) |  |  | — |  |  | — |  |  | (13) |  | (b) | 4 |  |  | (9) |
Amortization of prior service credit and actuarial gains | — |  |  | — |  |  | (3) |  |  | — |  |  | (3) |  | (c) | 1 |  |  | (2) |
Total other comprehensive income (loss) | (333) |  |  | (158) |  |  | (3) |  |  | (1) |  |  | (495) |  |  | 126 |  |  | (369) |
Balance — June 30, 2026 | $ | (125) |  |  | $ | (68) |  |  | $ | 78 |  |  | $ | (8) |  |  | $ | (123) |  |  | $ | 31 |  |  | $ | (92) |
Balance — January 1, 2025 | $ | (205) |  |  | $ | (135) |  |  | $ | 131 |  |  | $ | (10) |  |  | $ | (219) |  |  | $ | 55 |  |  | $ | (164) |
Other comprehensive income (loss) before reclassifications: |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized holding gains, net | 287 |  |  | — |  |  | — |  |  | — |  |  | 287 |  |  | (73) |  |  | 214 |
Unrealized gains, net | — |  |  | 134 |  |  | — |  |  | — |  |  | 134 |  |  | (34) |  |  | 100 |
Other | — |  |  | — |  |  | — |  |  | 5 |  |  | 5 |  |  | (1) |  |  | 4 |
Total other comprehensive income (loss) before reclassifications | 287 |  |  | 134 |  |  | — |  |  | 5 |  |  | 426 |  |  | (108) |  |  | 318 |
Amounts reclassified from accumulated other comprehensive income (loss) that (increase) decrease net income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net yield adjustment from cash flow hedges currently in effect | — |  |  | 86 |  |  | — |  |  | — |  |  | 86 |  | (b) | (22) |  |  | 64 |
Amortization of prior service credit and actuarial gains | — |  |  | — |  |  | (4) |  |  | — |  |  | (4) |  | (c) | 1 |  |  | (3) |
Total other comprehensive income (loss) | 287 |  |  | 220 |  |  | (4) |  |  | 5 |  |  | 508 |  |  | (129) |  |  | 379 |
Balance — June 30, 2025 | $ | 82 |  |  | $ | 85 |  |  | $ | 127 |  |  | $ | (5) |  |  | $ | 289 |  |  | $ | (74) |  |  | $ | 215 |
__________________________________________________________________________________ (a)Included in Gain (loss) on bank investment securities in the Consolidated Statement of Income. (b)Included in Interest income in the Consolidated Statement of Income. (c)Included in Other costs of operations in the Consolidated Statement of Income. Accumulated other comprehensive income (loss), net during the six months ended June 30, 2026 and 2025 consisted of the following.
(Dollars in millions) | Investment Securities |  | Cash Flow Hedges |  | Defined Benefit Plans |  | Other |  | Total
Balance — January 1, 2026 | $ | 155 |  |  | $ | 67 |  |  | $ | 61 |  |  | $ | (6) |  |  | $ | 277 |
Net gain (loss) during period | (248) |  |  | (118) |  |  | (2) |  |  | (1) |  |  | (369) |
Balance — June 30, 2026 | $ | (93) |  |  | $ | (51) |  |  | $ | 59 |  |  | $ | (7) |  |  | $ | (92) |
Balance — January 1, 2025 | $ | (153) |  |  | $ | (101) |  |  | $ | 98 |  |  | $ | (8) |  |  | $ | (164) |
Net gain (loss) during period | 214 |  |  | 164 |  |  | (3) |  |  | 4 |  |  | 379 |
Balance — June 30, 2025 | $ | 61 |  |  | $ | 63 |  |  | $ | 95 |  |  | $ | (4) |  |  | $ | 215 |

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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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