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Income Taxes (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Income Taxes |  |  |  |  |
Effective tax rate of income (loss) before income taxes | 24.20% |  | 24.30% | 23.90% | 23.90%
Excess tax benefits associated with equity-based compensation | $ 3 |  | $ 2 | $ 10 | $ 12
Equity in net losses of unconsolidated entities | 12 |  | 17 | 23 | 32
2017 Audit [Member] |  |  |  |  |
Income Taxes |  |  |  |  |
Income tax deposit paid |  | $ 103 |  |  |
Low income housing investments [Member] |  |  |  |  |
Income Taxes |  |  |  |  |
Equity in net losses of unconsolidated entities | 12 |  | 17 | 25 | 31
Income tax benefit from low-income housing investments | 26 |  | 25 | 48 | 48
Interest expense | $ 3 |  | $ 4 | $ 7 | $ 6

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