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Income Taxes (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Income Taxes |  |  |  |
Effective tax rate of income (loss) before income taxes | 23.60% | 24.10% | 22.20% | 24.00%
Tax credits and adjustments | $ 37 | $ 2 | $ 111 | $ 6
Investment proportional amortization | 19 |  | 56 |
Income tax benefit from low-income housing investments | 26 | 28 | 76 | 76
Variable interest entities interest expense | 5 | 3 | 16 | 10
Equity in net losses of unconsolidated entities | $ (1) | 18 | $ (4) | 41
Low income housing investments [Member] |  |  |  |
Income Taxes |  |  |  |
Equity in net losses of unconsolidated entities |  | $ 18 |  | $ 43

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