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Performance Bonds and Guaranty Fund Contributions (Tables)
 12 Months Ended
Dec. 31, 2023
Performance Bonds and Guaranty Fund Contributions [Abstract]  
Cash and securities held as performance bonds and guaranty fund contributions at fair value
Cash and non-cash deposits held as performance bonds and guaranty fund contributions at fair value at December 31, 2023 and 2022 were as follows:
 20232022
(in millions)Cash
Non-Cash
Deposits
and
IEF Funds (1)
Cash
Non-Cash
Deposits
and
IEF Funds (1)
Performance bonds$87,285.5 $180,866.3 $132,653.7 $94,127.2 
Guaranty fund contributions2,379.6 6,849.6 2,450.3 5,026.0 
Cross-margin arrangements183.1 1,374.5 142.6 561.1 
Other(2)
344.3 2.1 2.6 2.1 
Total$90,192.5 $189,092.5 $135,249.2 $99,716.4 
Letters of credit At December 31, 2023 and 2022, these letters of credit, which are not included in the accompanying consolidated balance sheets, were as follows:
(in millions)20232022
Performance bonds$3,916.7 $4,674.3 
Performance bond collateral for delivery4,631.4 3,445.0 
Total Letters of Credit$8,548.1 $8,119.3