XML 65 R50.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Performance Bonds and Guaranty Fund Contributions (Cash and Securities Held as Performance Bonds and Guaranty Fund Contributions at Fair Value) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Total | $ 98,895.4 | $ 90,192.5 | $ 135,249.2
Cash [Member] |  |  |
Performance bonds | 96,036.4 | 87,285.5 |
Guaranty Fund Contributions | 2,343.5 | 2,379.6 |
Cross-margin arrangements | 233.1 | 183.1 |
Performance collateral for delivery | 282.4 | 344.3 |
Total | 98,895.4 | 90,192.5 |
Non-Cash Deposits and IEF Funds [Member] |  |  |
Performance bonds | 191,241.1 | 180,866.3 |
Guaranty Fund Contributions | 7,977.2 | 6,849.6 |
Cross-margin arrangements | 678.5 | 1,374.5 |
Performance collateral for delivery | 2.1 | 2.1 |
Total | $ 199,898.9 | $ 189,092.5 |

X
- Definition Cross-margin arrangements + References No definition available. + Details
Name: | cme_CrossMarginArrangements
Namespace Prefix: | cme_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Guaranty Fund Contributions + References No definition available. + Details
Name: | cme_GuarantyFundContributions
Namespace Prefix: | cme_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Performance bonds + References No definition available. + Details
Name: | cme_PerformanceBonds
Namespace Prefix: | cme_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Performance collateral for delivery + References No definition available. + Details
Name: | cme_PerformanceCollateralForDelivery
Namespace Prefix: | cme_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of right to receive cash and securities on deposit with broker-dealers to demonstrate an intention to complete a purchase (good faith deposit) and collateral deposited by counterparty to cover the credit risk assumed (margin deposit). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_GoodFaithAndMarginDepositsWithBrokerDealers
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis=us-gaap_CashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis=cme_SecuritiesAndIefFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |