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Business Developments and Risks and Uncertainties (Schedule of Results of Operations from Discontinued Operation) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Revenues |  |  |  |
Revenues | $ 3 | $ 22 | $ 6 | $ 46
Cost of sales | 1 | 11 | 2 | 22
Total revenues from discontinued operations | 2 | 11 | 4 | 24
Expenses: |  |  |  |
Operating | 2 | 11 | 3 | 24
Interest | 0 | 1 | 0 | 2
Increase (decrease) on loss on disposal group | 0 | 1 | 1 | (1)
Total expenses from discontinued operations | 2 | 13 | 4 | 25
Income (loss) before income taxes from discontinued operations | 0 | (2) | 0 | (1)
Provision (benefit) for income taxes from discontinued operations | 0 | 0 | 0 | 0
Income (loss) from discontinued operations, net of income taxes | $ 0 | $ (2) | $ 0 | $ (1)

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