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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2023	Mar. 31, 2022
Reconciliation of cash, cash equivalents, and restricted cash and cash equivalents:
Cash and cash equivalents	$ 435.6	$ 659.4
Total	1,892.5	2,474.3
Margin deposits and clearing funds
Reconciliation of cash, cash equivalents, and restricted cash and cash equivalents:
Restricted cash and cash equivalents (included in margin deposits and clearing funds)	1,428.4	1,810.3
Customer bank deposits (included in margin deposits and clearing funds)	24.4
Other current assets
Reconciliation of cash, cash equivalents, and restricted cash and cash equivalents:
Restricted cash and cash equivalents (included in other current assets)	$ 4.1	$ 4.6

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