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Investment Securities - Gains and Losses Recognized in Income from Securities (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Available-for-sale debt and other securities: |  |  |  |
Realized gains | $ 4 | $ 1 | $ 10 | $ 6
Realized losses | (14) | (1) | (21) | (6)
Impairment losses | 7 | 0 | 7 | 0
Net losses on available-for-sale debt and other securities | (17) | 0 | (18) | 0
Equity securities: |  |  |  |
Net realized gains (losses) | 3 | (5) | 4 | (5)
Net unrealized gains | 34 | 21 | 22 | 12
Net equity securities gains | 37 | 16 | 26 | 7
Total (losses) gains recognized in income from available-for-sale debt and other securities, trading debt securities and equity securities | 20 | 16 | 8 | 7
Commercial Banking Revenue and Wealth and Asset Management Revenue |  |  |  |
Equity securities: |  |  |  |
Total (losses) gains recognized in income from available-for-sale debt and other securities, trading debt securities and equity securities | $ 2 | $ 2 | $ 5 | $ 6

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