Fair Value Measurements (Gain/Loss Included in Earnings Relating to Assets Still Held at End of Period) (Details) - USD ($) $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Fair Value Disclosures [Abstract] | ||||
| The amount of total (gain) loss for the period included in earnings attributable to the change in unrealized (gain) loss relating to liabilities still held at the end of period | [1] | $ 25 | $ 7 | |
| Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized 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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