Summary of Significant Accounting Policies - Schedule of Spot Trades (Details) - Spot Trade - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Accounts Receivable
Assets:
Gross	$ 975.7	$ 521.5
Offset on the Balance Sheet	(879.4)	(478.2)
Net Assets	96.3	43.3
Accounts Payable
Liabilities:
Gross Liabilities	919.1	527.5
Offset on the Balance Sheet	(879.4)	(478.2)
Net Liabilities	$ 39.7	$ 49.3

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