Clearing Operations - Guaranty Fund Contributions (Details) - USD ($) $ in Millions	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	$ 404		$ 320
Default insurance	250		100
ICE Clear Europe
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	233		206
Default insurance	75	$ 75
ICE Clear U.S.
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	103		61
Default insurance	25
ICE Clear Credit
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	50		50
Default insurance	50	$ 50
ICE Clear Netherlands
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	2		2
ICE Clear Singapore
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	1		1
ICE NGX
Clearing Organizations [Line Items]
ICE Portion of Guaranty Fund Contribution	15
Default insurance	$ 100		$ 100