Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Loss Contingencies [Line Items] | ||
| Option to extend lease period (in years) | 12 years | |
| Total estimated future lease payments | $ 98 | |
| Revenue | $ 4,171 | $ 3,777 |
| 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 | Related Party | ||
| Loss Contingencies [Line Items] | ||
| Revenue | $ 52 | $ 52 |
| Minimum | ||
| Loss Contingencies [Line Items] | ||
| Remaining lease terms | 1 year | |
| Lease term (in years) | 1 year | |
| Maximum | ||
| Loss Contingencies [Line Items] | ||
| Remaining lease terms | 11 years | |
| Lease term (in years) | 11 years | |
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- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. No definition available.
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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of unrecorded obligation to transfer funds in future for fixed or minimum amount or quantity of product and service at fixed or minimum price. Includes, but is not limited to, lease not yet commenced and take-or-pay and throughput contracts. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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