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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