Income Taxes (Income Taxes And Related Effective Tax Rates) (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Disclosure Income Taxes Income Taxes And Related Effective Tax Rates [Abstract] | ||||
| Income (loss) from continuing operations before income taxes | $ (23) | $ (7) | $ (107) | $ (125) |
| Provision (benefit) for income taxes | $ 0 | $ 0 | $ 0 | $ 0 |
| Effective tax rate | 0.00% | 0.00% | 0.00% | 0.00% |
| X | ||||||||||
- Definition Disclosure - Income Taxes (Income Taxes And Related Effective Tax Rates) [Abstract] No definition available.
|
| X | ||||||||||
- Definition Percentage 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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|