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Goodwill | 12 Months Ended
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Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill | 8. Goodwill The changes in the carrying amount of goodwill by segment were as follows:
| (Stated in millions) |
| Reservoir |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Characterization |  |  | Drilling |  |  | Production |  |  | Cameron |  |  | Total |
Balance, January 1, 2017 | $ | 4,820 |  |  | $ | 10,114 |  |  | $ | 4,639 |  |  | $ | 5,417 |  |  | $ | 24,990 |
Acquisitions |  | 21 |  |  |  | 3 |  |  |  | 46 |  |  |  | 24 |  |  |  | 94 |
Impact of changes in exchange rates |  | 7 |  |  |  | 9 |  |  |  | 12 |  |  |  | 6 |  |  |  | 34 |
Balance, December 31, 2017 |  | 4,848 |  |  |  | 10,126 |  |  |  | 4,697 |  |  |  | 5,447 |  |  |  | 25,118 |
Acquisitions |  | 39 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 39 |
Business divestiture |  | (175 | ) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (175 | )
Impact of changes in exchange rates |  | (9 | ) |  |  | (15 | ) |  |  | (19 | ) |  |  | (8 | ) |  |  | (51 | )
Balance, December 31, 2018 | $ | 4,703 |  |  | $ | 10,111 |  |  | $ | 4,678 |  |  | $ | 5,439 |  |  | $ | 24,931 |

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- Definition The entire disclosure for goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 + Details
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