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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, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Revenues |  |  |  |
Revenues | $ 31 |  | $ 63 |
Cost of sales | 14 |  | 31 |
Total revenues from discontinued operations | 17 |  | 32 |
Expenses: |  |  |  |
Operating | 16 |  | 36 |
Interest | 1 |  | 2 |
Increase (decrease) on loss on disposal group | (3) |  | (6) |
Total expenses from discontinued operations | 14 |  | 32 |
Income (loss) before income taxes from discontinued operations | 3 |  | 0 |
Provision (benefit) for income taxes from discontinued operations | 0 |  | 0 |
Income (loss) from discontinued operations, net of income taxes | $ 3 | $ 0 | $ 0 | $ 0

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