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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 29, 2024 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Proceeds from sale of Promissory Note |  |  |  | $ 75 | $ 0
Fair value loss on equity securities |  | $ 1 |  | 1 |
Fair value gain on equity securities |  | 2 |  | 2 |
Equity securities without readily determinable fair value, amount |  | $ 99 |  | 99 |
Developed technology | Exchanges Segment |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Impairment of assets |  |  | $ 3 | $ 3 |
Black Knight, Inc. |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Proceeds from sale of Promissory Note | $ 75 |  |  |  |

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