Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accounts receivable, allowance for credit loss, current	$ 7.0	$ 4.5
Margin Deposits And Clearing Funds, Assets	$ 2,039.0	$ 848.8
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	325,000,000	325,000,000
Common stock, shares issued (in shares)	106,009,818	105,556,817
Common stock, shares outstanding (in shares)	104,677,388	105,527,815
Common stock held in treasury (in shares)	1,332,430	29,002