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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Total | $ 157,949.6 | $ 86,781.8 | $ 37,077.0
Cash [Member] |  |  |
Performance bonds | 151,094.8 | 83,923.5 |
Guaranty Fund Contributions | 6,745.6 | 2,770.0 |
Cross-margin arrangements | 83.6 | 88.1 |
Performance collateral for delivery | 25.6 | 0.2 |
Total | 157,949.6 | 86,781.8 |
Non-Cash Deposits and IEF Funds [Member] |  |  |
Performance bonds | 70,005.3 | 124,573.7 |
Guaranty Fund Contributions | 3,326.1 | 6,015.7 |
Cross-margin arrangements | 0.0 | 8.1 |
Performance collateral for delivery | 2.1 | 2.1 |
Total | $ 73,333.5 | $ 130,599.6 |

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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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