Clearing Operations - Separate Cash Accounts (Details) € in Millions, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 GBP (£)	Dec. 31, 2019 EUR (€)	Dec. 31, 2018 GBP (£)	Dec. 31, 2018 EUR (€)
Clearing Organizations [Line Items]
Cash deposits	$ 64,987	$ 63,955
National Bank Account | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	9,667	8,647
National Bank Account | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	19,480	19,484
Reverse Repo | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	19,187	18,097
Reverse Repo | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	2,411	1,935
Reverse Repo | ICE Clear U.S.
Clearing Organizations [Line Items]
Cash deposits	4,320	4,380
Sovereign Debt | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	3,591	4,035
Sovereign Debt | ICE Clear U.S.
Clearing Organizations [Line Items]
Cash deposits	2,945	2,340
Demand Deposits | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	17	85
Demand Deposits | ICE Clear Credit
Clearing Organizations [Line Items]
Cash deposits	2,522	3,807
Demand Deposits | Other ICE Clearing Houses
Clearing Organizations [Line Items]
Cash deposits	7	8
Unsettled Variation Margin and Delivery Contracts Receivable/Payable | ICE NGX
Clearing Organizations [Line Items]
Cash deposits	840	1,137
Cash Deposit Based On Euro/US Dollar Exchange Rate | De Nederlandsche Bank | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	$ 9,000	$ 8,000		€ 8,000		€ 7,000
Exchange Rate to USD	1.1212	1.1466
Cash Deposit Based On Euro/US Dollar Exchange Rate | Bank of England | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	$ 11			€ 10
Cash Deposit Based On Pound Sterling/US Dollar Exchange Rate | Bank of England | ICE Clear Europe
Clearing Organizations [Line Items]
Cash deposits	$ 663	$ 638	£ 500		£ 500
Exchange Rate to USD	1.3260	1.2756