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OTHER COMPREHENSIVE INCOME - Activity/Roll Forward (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
After-tax |  |  |  |
Unrealized gains (losses) on available-for-sale securities arising during the period, net of hedges | $ 167 | $ 761 | $ 706 | $ 418
Reclassification adjustment for realized net losses included in net income | 8 | 46 | 89 | 154
Other comprehensive income, net of tax | 175 | 807 | 795 | 572
Unrealized gains and (losses) on debt securities |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss) before reclassifications | 197 | 573 | 591 | 310
Reclassification adjustment for cash flow hedges included in net income | 2 | 4 | 69 | 9
Tax (expense) benefit |  |  |  |
OCI before reclassification, tax (expense) benefit | (46) | (131) | (139) | (70)
Reclassification adjustment for realized net losses included in net income | 0 | (1) | (16) | (2)
After-tax |  |  |  |
Unrealized gains (losses) on available-for-sale securities arising during the period, net of hedges | 151 | 442 | 452 | 240
Reclassification adjustment for realized net losses included in net income | 2 | 3 | 53 | 7
Other comprehensive income, net of tax | 153 | 445 | 505 | 247
Net change related to cash flow hedges on loans |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss) before reclassifications | 23 | 412 | 324 | 231
Reclassification adjustment for cash flow hedges included in net income | 7 | 55 | 46 | 190
Tax (expense) benefit |  |  |  |
OCI before reclassification, tax (expense) benefit | (6) | (95) | (77) | (53)
Reclassification adjustment for realized net losses included in net income | (1) | (12) | (10) | (44)
After-tax |  |  |  |
Unrealized gains (losses) on available-for-sale securities arising during the period, net of hedges | 17 | 317 | 247 | 178
Reclassification adjustment for realized net losses included in net income | 6 | 43 | 36 | 146
Other comprehensive income, net of tax | 23 | 360 | 283 | 324
Net change related to cash flow hedges on loans | Cash Flow Hedges |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss), pretax | 30 | 467 | 370 | 421
Tax (expense) benefit |  |  |  |
Total other comprehensive income (loss), tax (expense) benefit | (7) | (107) | (87) | (97)
After-tax |  |  |  |
Other comprehensive income, net of tax | 23 | 360 | 283 | 324
Accumulated foreign currency adjustment |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss), pretax | (2) | 2 | 7 |
Tax (expense) benefit |  |  |  |
Total other comprehensive income (loss), tax (expense) benefit | 1 | 0 | (1) |
After-tax |  |  |  |
Other comprehensive income, net of tax | (1) | 2 | 6 |
Unrealized losses for pension and other post-retirement obligations |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss), pretax |  | 1 | 1 | 2
Tax (expense) benefit |  |  |  |
Total other comprehensive income (loss), tax (expense) benefit |  | (1) | 0 | (1)
After-tax |  |  |  |
Unrealized gains (losses) on available-for-sale securities arising during the period, net of hedges | 0 | 0 | 1 | 0
Reclassification adjustment for realized net losses included in net income | 0 | 0 | 0 | 1
Other comprehensive income, net of tax | 0 | 0 | 1 | 1
AOCI |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss), pretax | 227 | 1,047 | 1,038 | 742
Tax (expense) benefit |  |  |  |
Total other comprehensive income (loss), tax (expense) benefit | (52) | (240) | (243) | (170)
After-tax |  |  |  |
Other comprehensive income, net of tax | 175 | 807 | 795 | 572
Debt securities | Unrealized gains and (losses) on debt securities |  |  |  |
Pretax |  |  |  |
Other comprehensive income (loss), pretax | 199 | 577 | 660 | 319
Tax (expense) benefit |  |  |  |
Total other comprehensive income (loss), tax (expense) benefit | (46) | (132) | (155) | (72)
After-tax |  |  |  |
Other comprehensive income, net of tax | $ 153 | $ 445 | $ 505 | $ 247

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