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Equity - Redeemable Noncontrolling Interests (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 01, 2022	Dec. 31, 2022
Noncontrolling Interest [Line Items]
Interest in joint venture minimum (as a percent)		20.00%
Change in control period		15 days
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance as of December 31, 2021		$ 3,429
Net income attributable to redeemable noncontrolling interest		249
Distributions to noncontrolling interest		(278)
Redemption value adjustment		(545)
Other		2
Balance as of December 31, 2022		3,267
Noncontrolling Interest, Increase from Subsidiary Equity Issuance		$ 410
CME Group
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	$ 410
CME Group
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership by noncontrolling owners (as a percent)		27.00%
IHS Markit Ltd | CME Group
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Noncontrolling Interest, Ownership Percentage Exchanged	27.00%
S&P Dow Jones Indices LLC Joint Venture | CME Group
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership by noncontrolling owners (as a percent)	27.00%

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