Description of Company and Significant Accounting Policies (Details)
|
12 Months Ended |
|
Dec. 31, 2018
USD ($)
Division
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
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 |
$ 390,000,000
|
360,000,000
|
329,000,000
|
| Cash and Cash Equivalents [Abstract] |
|
|
|
| Cash equivalents, maximum maturity (in months) |
3 months
|
|
|
| Goodwill [Roll Forward] |
|
|
|
| Goodwill |
$ 2,693,000,000
|
2,414,000,000
|
|
| Current year acquisitions |
105,000,000
|
285,000,000
|
|
| Purchase price adjustments for previous acquisitions |
27,000,000
|
(6,000,000)
|
|
| Goodwill |
$ 2,825,000,000
|
2,693,000,000
|
2,414,000,000
|
| 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 |
$ 1,922,000,000
|
1,679,000,000
|
|
| Current year acquisitions |
99,000,000
|
249,000,000
|
|
| Purchase price adjustments for previous acquisitions |
34,000,000
|
(6,000,000)
|
|
| Goodwill |
2,055,000,000
|
1,922,000,000
|
1,679,000,000
|
| Drilling and Evaluation |
|
|
|
| Goodwill [Roll Forward] |
|
|
|
| Goodwill |
771,000,000
|
735,000,000
|
|
| Current year acquisitions |
6,000,000
|
36,000,000
|
|
| Purchase price adjustments for previous acquisitions |
(7,000,000)
|
0
|
|
| Goodwill |
$ 770,000,000
|
$ 771,000,000
|
$ 735,000,000
|