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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract] |
Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill by segment were as follows:
| (Stated in millions) |
| Reservoir |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Characterization |  |  | Drilling |  |  | Production |  |  | Cameron |  |  | Total |
Balance, December 31, 2019 | $ | 4,560 |  |  | $ | 7,092 |  |  | $ | 3,949 |  |  | $ | 441 |  |  | $ | 16,042 |
Impairment (see Note 3) |  | - |  |  |  | (1,659 | ) |  |  | (1,228 | ) |  |  | (183 | ) |  |  | (3,070 | )
Impact of changes in exchange rates and other |  | - |  |  |  | 10 |  |  |  | (17 | ) |  |  | 3 |  |  |  | (4 | )
Balance, September 30, 2020 | $ | 4,560 |  |  | $ | 5,443 |  |  | $ | 2,704 |  |  | $ | 261 |  |  | $ | 12,968 |
In connection with a change in reportable segments, Schlumberger reallocated its goodwill as of September 30, 2020 to its new segments on a relative fair value basis:
| (Stated in millions) |
| Digital & |  |  | Reservoir |  |  | Well |  |  | Production |  |  |  |  |
| Integration |  |  | Performance |  |  | Construction |  |  | Systems |  |  | Total |
Balance, October 1, 2020 | $ | 2,041 |  |  | $ | 3,806 |  |  | $ | 6,267 |  |  | $ | 854 |  |  | $ | 12,968 |
Impact of changes in exchange rates and other |  | 6 |  |  |  | (4 | ) |  |  | 11 |  |  |  | (1 | ) |  |  | 12 |
Balance, December 31, 2020 |  | 2,047 |  |  |  | 3,802 |  |  |  | 6,278 |  |  |  | 853 |  |  |  | 12,980 |
Acquisitions |  | 18 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 18 |
Impact of changes in exchange rates and other |  | (13 | ) |  |  | 2 |  |  |  | 3 |  |  |  | - |  |  |  | (8 | )
Balance, December 31, 2021 | $ | 2,052 |  |  | $ | 3,804 |  |  | $ | 6,281 |  |  | $ | 853 |  |  | $ | 12,990 |

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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=121556970&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=121556970&loc=d3e13854-109267 + Details
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