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Performance Bonds and Guaranty Fund Contributions (Tables)
 12 Months Ended
Dec. 31, 2021
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, 2021 and 2020 were as follows:
 20212020
(in millions)Cash
Non-Cash
Deposits
and
IEF Funds (1)
Cash
Non-Cash
Deposits
and
IEF Funds (1)
Performance bonds$151,094.8 $70,005.3 $83,923.5 $124,573.7 
Guaranty fund contributions6,745.6 3,326.1 2,770.0 6,015.7 
Cross-margin arrangements83.6 — 88.1 8.1 
Performance bond collateral for delivery25.6 2.1 0.2 2.1 
Total$157,949.6 $73,333.5 $86,781.8 $130,599.6 
Letters of credit At December 31, 2021 and 2020 these letters of credit, which are not included in the accompanying consolidated balance sheets, were as follows:
(in millions)20212020
Performance bonds$3,739.5 $3,394.8 
Performance bond collateral for delivery2,603.7 1,290.4 
Total Letters of Credit$6,343.2 $4,685.2