Income Taxes (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
Aug. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Taxes
Effective tax rate of income (loss) before income taxes		24.10%	22.80%	24.00%	23.50%
Permanent differences for tax purposes		$ 10		$ 16
Excess tax benefits associated with equity-based compensation		1	$ 5	11	$ 17
Equity in net losses of unconsolidated entities		18	17	41	49
Alternative fuel tax credits	$ 26
Low income housing investments [Member]
Income Taxes
Equity in net losses of unconsolidated entities		18	16	43	47
Income tax benefit from low-income housing investments		28	26	76	74
Interest expense		$ 3	$ 5	$ 10	$ 10

Amount of affordable housing tax credits and other tax benefits recognized.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.

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Amount of the cost of borrowed funds accounted for as interest expense.

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