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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Total | $ 90,192.5 | $ 135,249.2 | $ 157,949.6
Cash [Member] |  |  |
Performance bonds | 87,285.5 | 132,653.7 |
Guaranty Fund Contributions | 2,379.6 | 2,450.3 |
Cross-margin arrangements | 183.1 | 142.6 |
Performance collateral for delivery | 344.3 | 2.6 |
Total | 90,192.5 | 135,249.2 |
Non-Cash Deposits and IEF Funds [Member] |  |  |
Performance bonds | 180,866.3 | 94,127.2 |
Guaranty Fund Contributions | 6,849.6 | 5,026.0 |
Cross-margin arrangements | 1,374.5 | 561.1 |
Performance collateral for delivery | 2.1 | 2.1 |
Total | $ 189,092.5 | $ 99,716.4 |

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- Definition Cross-margin arrangements + References No definition available. + Details
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- Definition Guaranty Fund Contributions + References No definition available. + Details
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- Definition Performance bonds + References No definition available. + Details
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- Definition Performance collateral for delivery + References No definition available. + Details
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- 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 No definition available. + Details
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