Legal Proceedings (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2017 USD ($)	Dec. 31, 2018 clearingHouse
ICE Clear US and ICE Clear Europe Limited | CME Group, Inc.
Loss Contingencies [Line Items]
Number of clearing houses filed suit against | clearingHouse			2
License agreement, term (in years)		10 years
License agreement amount paid | $		$ 50,001
Period following expiration of license agreement (in years)	1 year
Subsidiary | ICE Data PRD, LLC
Loss Contingencies [Line Items]
Percentage of broker quoted securities less than securities priced by PRD	2.00%