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Clearing Operations - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Clearing Organizations [Line Items]
Cash deposits	$ 83,607	$ 82,149
Invested deposits, delivery contracts receivable and unsettled variation margin	2,636	2,163
ICE NGX
Clearing Organizations [Line Items]
Cash deposits	15
National bank account | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	4,920	4,817
National bank account | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	20,310	20,369
Reverse repo | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	38,575	37,276
Reverse repo | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	4,807	4,089
Reverse repo | ICE Clear U.S.
Clearing Organizations [Line Items]
Cash deposits	8,236	7,382
Sovereign debt | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	2,099	4,515
Sovereign debt | ICE Clear U.S.
Clearing Organizations [Line Items]
Cash deposits	497	347
Demand deposits | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	291	648
Demand deposits | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	3,862	2,697
Demand deposits | Other ICE Clearing Houses
Clearing Organizations [Line Items]
Cash deposits	10	9
Unsettled variation margin and delivery contracts receivable | ICE NGX
Clearing Organizations [Line Items]
Invested deposits, delivery contracts receivable and unsettled variation margin	1,285	1,639
Invested deposits - sovereign debt | ICE Clear Europe
Clearing Organizations [Line Items]
Invested deposits, delivery contracts receivable and unsettled variation margin	$ 1,351	$ 524

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Invested Deposits, Delivery Contracts Receivable And Unsettled Variation Margin, Current

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