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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedules of Intangible Assets and Goodwill | The following is a summary of the activity in our goodwill balance by segment for the nine months ended September 30, 2024 (in millions):
| Exchanges Segment |  | Fixed Income and Data Services Segment |  | Mortgage Technology Segment |  | Total Consolidated
Goodwill balance at December 31, 2023 | $ | 8,155 |  |  | $ | 4,854 |  |  | $ | 17,544 |  |  | $ | 30,553 |
Acquisition | — |  |  | — |  |  | 4 |  |  | 4 |
Foreign currency translation | 15 |  |  | 2 |  |  | — |  |  | 17 |
Other activity, net | — |  |  | — |  |  | 24 |  |  | 24 |
Goodwill balance at September 30, 2024 | $ | 8,170 |  |  | $ | 4,856 |  |  | $ | 17,572 |  |  | $ | 30,598 |
The following is a summary of the activity in our other intangible assets balance for the nine months ended September 30, 2024 (in millions):
Other intangible assets balance at December 31, 2023 | $ | 17,317 |
Acquisition | 3 |
Foreign currency translation | 12 |
Amortization of other intangible assets | (759) |
Other intangible assets balance at September 30, 2024 | $ | 16,573 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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