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Accounts Payable and Other Current Liabilities - Schedule of Accounts Payable and Other Current Liabilities (Detail) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Payables and Accruals [Abstract]    
Trade payables $ 13.4 $ 17.3
Other current liabilities 19.0 11.3
Accrued event costs 21.5 7.4
Accrued personnel costs 7.1 4.7
Total accounts payable and other current liabilities $ 61.0 $ 40.7