Impairments and Other Charges (Credits) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Restructuring Cost and Reserve [Line Items] | ||||||
| Severance costs | $ 107 | $ 169 | $ 107 | $ 276 | ||
| Inventory cost and write-downs | 25 | 0 | 25 | 0 | ||
| Fixed and other assets write-offs | (14) | (115) | (14) | (115) | ||
| Impairment of assets held for sale | 0 | 96 | 0 | 200 | ||
| Gain (Loss) on Disposition of Business | 0 | 0 | (17) | 0 | ||
| Impairment of Real Estate | 0 | 0 | 0 | 53 | ||
| Cybersecurity incident | 0 | (10) | 0 | (10) | ||
| (Gain) Loss on Investments | 36 | 6 | 100 | 6 | ||
| Other | (3) | 28 | (51) | 120 | ||
| Impairments and other (charges) credits | [1] | (107) | (392) | (12) | (748) | |
| Gain (loss) from ownership change in equity investment | 54 | |||||
| Gain (loss) from sale of a portion of our shares in an equity investment | 36 | 36 | ||||
| Completion And Production [Member] | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Impairments and other (charges) credits | (38) | (252) | 45 | (453) | ||
| Drilling And Evaluation [Member] | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Impairments and other (charges) credits | (54) | (140) | (38) | (225) | ||
| Corporate and Other | ||||||
| Restructuring Cost and Reserve [Line Items] | ||||||
| Impairments and other (charges) credits | $ (15) | $ 0 | $ (19) | $ (70) | ||
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