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Acquisitions and Divestitures - Business Acquisition Pro Forma Information (Details) - Black Knight, Inc. - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2023
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] |  |
Total revenues, less transaction-based expenses | $ 2,190 | $ 6,534
Net income attributable to ICE | $ 474 | $ 1,755

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