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Income Taxes (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Income Taxes |  |  |  |
Effective tax rate of income (loss) before income taxes | 23.90% | 24.20% | 21.30% | 23.90%
Tax credits and adjustments | $ 37 | $ 2 | $ 74 | $ 4
Investment proportional amortization | 37 |  | 37 |
Income tax benefit from low-income housing investments | 22 | 26 | 50 | 48
Variable interest entities interest expense | 5 | 3 | 11 | 7
Equity in net losses of unconsolidated entities | $ (22) | 12 | $ (3) | 23
Low income housing investments [Member] |  |  |  |
Income Taxes |  |  |  |
Equity in net losses of unconsolidated entities |  | $ 12 |  | $ 25

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