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Investments (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
Debt Securities, Available-for-sale [Line Items]          
Equity securities without readily determinable fair value $ 19.1   $ 19.1   $ 21.9
Equity securities without readily determinable fair value, impairment loss 0.0 $ 0.0 2.8 $ 0.0  
Cumulative gains on investments in equity securities without readily determinable fair values 0.8   0.8   0.8
Debt securities, available-for-sale, amortized cost 5.0   5.0   $ 5.0
Debt Securities          
Debt Securities, Available-for-sale [Line Items]          
Provision for credit loss included in selling, general and administrative expenses $ 0.0 $ 0.0 $ 4.7 $ 0.0