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Other Assets (Tables)
12 Months Ended
Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of Other Assets
December 31,
20232022
(in millions)
Property and equipment$34.9 $5.4 
Prepaid expenses11.3 17.4 
Claims receivable5.6 9.0 
Lease right-of-use assets10.6 27.6 
Other6.8 4.2 
Total other assets$69.2 $63.6