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Asset Impairments (Tables) | 9 Months Ended
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Sep. 30, 2019
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill Identified, by Segment | At September 30, 2019, the Company has approximately $3.2 billion of goodwill, by segment as follows (in millions):
|  | Wellbore Technologies |  |  | Completion & Production Solutions |  |  | Rig Technologies |  |  | Total |
Balance at December 31, 2018 |  | $ | 3,011 |  |  | $ | 2,041 |  |  | $ | 1,212 |  |  | $ | 6,264 |
Impairment |  |  | (1,866 | ) |  |  | (1,013 | ) |  |  | (220 | ) |  |  | (3,099 | )
Additions |  |  | 11 |  |  |  | 58 |  |  |  | 14 |  |  |  | 83 |
Currency translation adjustments and other |  |  | 1 |  |  |  | (8 | ) |  |  | (5 | ) |  |  | (12 | )
Balance at September 30, 2019 |  | $ | 1,157 |  |  | $ | 1,078 |  |  | $ | 1,001 |  |  | $ | 3,236 |
Identified Intangible Assets, by Segment | At September 30, 2019, the Company has approximately $866 million of identified intangible assets, by segment as follows (in millions):
|  | Wellbore Technologies |  |  | Completion & Production Solutions |  |  | Rig Technologies |  |  | Total |
Balance at December 31, 2018 |  | $ | 1,735 |  |  | $ | 1,005 |  |  | $ | 280 |  |  | $ | 3,020 |
Impairment |  |  | (1,298 | ) |  |  | (690 | ) |  |  | — |  |  |  | (1,988 | )
Additions |  |  | 6 |  |  |  | — |  |  |  | — |  |  |  | 6 |
Amortization |  |  | (90 | ) |  |  | (51 | ) |  |  | (22 | ) |  |  | (163 | )
Currency translation adjustments and other |  |  | (7 | ) |  |  | — |  |  |  | (2 | ) |  |  | (9 | )
Balance at September 30, 2019 |  | $ | 346 |  |  | $ | 264 |  |  | $ | 256 |  |  | $ | 866 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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