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Description of Company and Significant Accounting Policies (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) Division | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Number of business segments | Division | 2 |  |
Goodwill [Line Items] |  |  |
Goodwill, Impairment Loss | $ 0 | $ 0 | $ 0
Research and Development [Abstract] |  |  |
Research and development costs | $ 404,000,000 | 390,000,000 | 360,000,000
Cash and Cash Equivalents [Abstract] |  |  |
Cash equivalents, maximum maturity (in months) | 3 months |  |
Goodwill [Roll Forward] |  |  |
Goodwill | $ 2,825,000,000 | 2,693,000,000 |
Current year acquisitions | 11,000,000 | 105,000,000 |
Purchase price adjustments for previous acquisitions | (2,000,000) | 27,000,000 |
Other | (22,000,000) |  |
Goodwill | $ 2,812,000,000 | 2,825,000,000 | 2,693,000,000
Minimum |  |  |
Finite-lived intangible assets [Abstract] |  |  |
Useful life of finite-lived intangible assets (in years) | 1 year |  |
Maximum |  |  |
Finite-lived intangible assets [Abstract] |  |  |
Useful life of finite-lived intangible assets (in years) | 28 years |  |
Completion and Production |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | $ 2,055,000,000 | 1,922,000,000 |
Current year acquisitions | 6,000,000 | 99,000,000 |
Purchase price adjustments for previous acquisitions | (1,000,000) | 34,000,000 |
Other | (21,000,000) |  |
Goodwill | 2,039,000,000 | 2,055,000,000 | 1,922,000,000
Drilling and Evaluation |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | 770,000,000 | 771,000,000 |
Current year acquisitions | 5,000,000 | 6,000,000 |
Purchase price adjustments for previous acquisitions | (1,000,000) | (7,000,000) |
Other | (1,000,000) |  |
Goodwill | $ 773,000,000 | $ 770,000,000 | $ 771,000,000

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