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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2025
Equity [Abstract] |
Activity of the Components of Other Comprehensive Income and Accumulated Other Comprehensive Income | The tables below present the activity of the components of OCI and AOCI for the three months ended:
| Total OCI | Total AOCI
March 31, 2025 ($ in millions) | Pre-tax Activity | Tax Effect | Net Activity | Beginning Balance | Net Activity | Ending Balance
Unrealized holding gains on available-for-sale debt securities arising during period | $ | 633 |  | (152) |  | 481 |  |  |  |
Reclassification adjustment for net gains on available-for-sale debt securities included in net income | — |  | — |  | — |  |  |  |
Net unrealized losses on available-for-sale debt securities | 633 |  | (152) |  | 481 |  | (3,280) |  | 481 |  | (2,799) |
Amortization of unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities included in net income | 32 |  | (7) |  | 25 |  |  |  |
Net unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities | 32 |  | (7) |  | 25 |  | (684) |  | 25 |  | (659) |
Unrealized holding gains on cash flow hedge derivatives arising during period | 253 |  | (60) |  | 193 |  |  |  |
Reclassification adjustment for net losses on cash flow hedge derivatives included in net income | 56 |  | (14) |  | 42 |  |  |  |
Net unrealized losses on cash flow hedge derivatives | 309 |  | (74) |  | 235 |  | (654) |  | 235 |  | (419) |
Defined benefit pension plans, net | — |  | — |  | — |  | (16) |  | — |  | (16) |
Other | — |  | — |  | — |  | (2) |  | — |  | (2) |
Total | $ | 974 |  | (233) |  | 741 |  | (4,636) |  | 741 |  | (3,895) |
| Total OCI | Total AOCI
March 31, 2024 ($ in millions) | Pre-tax Activity | Tax Effect | Net Activity | Beginning Balance | Net Activity | Ending Balance
Unrealized holding losses on available-for-sale debt securities arising during period | $ | (236) |  | 54 |  | (182) |  |  |  |
Unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities | 994 |  | (209) |  | 785 |  |  |  |
Reclassification adjustment for net losses on available-for-sale debt securities included in net income | 3 |  | — |  | 3 |  |  |  |
Net unrealized losses on available-for-sale debt securities | 761 |  | (155) |  | 606 |  | (4,094) |  | 606 |  | (3,488) |
Unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities | (994) |  | 209 |  | (785) |  |  |  |
Amortization of unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities included in net income | 32 |  | (7) |  | 25 |  |  |  |
Net unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities | (962) |  | 202 |  | (760) |  | — |  | (760) |  | (760) |
Unrealized holding losses on cash flow hedge derivatives arising during period | (413) |  | 97 |  | (316) |  |  |  |
Reclassification adjustment for net losses on cash flow hedge derivatives included in net income | 89 |  | (20) |  | 69 |  |  |  |
Net unrealized losses on cash flow hedge derivatives | (324) |  | 77 |  | (247) |  | (372) |  | (247) |  | (619) |
Defined benefit pension plans, net | — |  | — |  | — |  | (17) |  | — |  | (17) |
Other | — |  | — |  | — |  | (4) |  | — |  | (4) |
Total | $ | (525) |  | 124 |  | (401) |  | (4,487) |  | (401) |  | (4,888) |
Reclassification Out of Accumulated Other Comprehensive Income to Net Income | The table below presents reclassifications out of AOCI:
| Condensed Consolidated Statements of Income Caption | For the three months ended March 31,
($ in millions) | 2025 | 2024
Net unrealized losses on available-for-sale debt securities:(a) |  |  |
Net losses included in net income | Securities (losses) gains, net | $ | — |  | (3) |
| Income before income taxes | — |  | (3) |
| Applicable income tax expense | — |  | — |
| Net income | — |  | (3) |
Net unrealized losses on available-for-sale debt securities transferred to held-to-maturity securities:(a) |  |  |
Net losses included in net income | Interest on securities | (32) |  | (32) |
| Income before income taxes | (32) |  | (32) |
| Applicable income tax expense | 7 |  | 7 |
| Net income | (25) |  | (25) |
Net unrealized losses on cash flow hedge derivatives:(a) |  |  |
Interest rate contracts related to C&I, commercial mortgage and commercial construction loans | Interest and fees on loans and leases | (56) |  | (89) |
| Income before income taxes | (56) |  | (89) |
| Applicable income tax expense | 14 |  | 20 |
| Net income | (42) |  | (69) |
Total reclassifications for the period | Net income | $ | (67) |  | (97) |
(a)Amounts in parentheses indicate reductions to net income.

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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 1 -Section 45 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1 + Details
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