Fair Value Measurements (Reconciliation of Net Beginning and Ending Balances Recorded for Net Assets and Liabilities Classified as Level 3) (Detail) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||||
| Beginning balance | $ 277 | $ 58 | ||
| Unrealized and realized loss included in net income(a) | [1] | 24 | 7 | |
| Settlements of derivative instruments | (1) | (3) | ||
| Ending balance | $ 300 | $ 62 | ||
| Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Cost of revenues (excludes items below) | Cost of revenues (excludes items below) | ||
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