Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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+ Details

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Lease impairment charges	$ 31	$ 120	$ 11
VIX Matter
Loss Contingencies [Line Items]
Litigation settlement, amount awarded to other party		9
CME Group
Loss Contingencies [Line Items]
Noncontrolling interest ownership by noncontrolling owners (as a percent)	27.00%
S&P/DJ Indices \| CME Group
Loss Contingencies [Line Items]
Noncontrolling interest ownership by noncontrolling owners (as a percent)	27.00%
S&P/DJ Indices \| CME Group
Loss Contingencies [Line Items]
Revenues earned under license agreement	$ 139	$ 149	$ 114