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v3.25.2

Comprehensive income - Accumulated Other Comprehensive Income (Loss), Net (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | $ 28,991 | $ 27,169 | $ 29,027 | $ 26,957
Total other comprehensive income (loss) | 125 | 38 | 379 | (92)
Ending balance | 28,525 | 28,424 | 28,525 | 28,424
Investment Securities |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | (153) |
Total other comprehensive income (loss) |  |  | 214 |
Ending balance | 61 |  | 61 |
Cash Flow Hedges |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | (101) |
Total other comprehensive income (loss) |  |  | 164 |
Ending balance | 63 |  | 63 |
Defined Benefit Plans |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | 98 |
Total other comprehensive income (loss) |  |  | (3) |
Ending balance | 95 |  | 95 |
Other |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance |  |  | (8) |
Total other comprehensive income (loss) |  |  | 4 |
Ending balance | (4) |  | (4) |
Accumulated Other Comprehensive Income (Loss), Net |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 90 | (589) | (164) | (459)
Total other comprehensive income (loss) |  |  | 379 | (92)
Ending balance | $ 215 | $ (551) | $ 215 | $ (551)

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