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Revenues from Contracts with Customers - Contract Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Contract costs          
Contract cost asset $ 175.0   $ 175.0   $ 198.9
Practical expedient, incremental costs of obtaining a contract     true    
Amortization expense of contract cost asset $ 10.1 $ 9.8 $ 70.8 $ 29.7  
Impairment loss for contract cost asset     $ 45.4 $ 0.0