Supplementary Financial Information- Schedule of Other (Loss) Income, Net (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Offsetting [Abstract]
Gain on step-up of equity method investment	$ 4.4	$ 0.0
Net loss on extinguishment of debt	0.0	(2.2)
Interest income	0.4	0.5
Foreign currency translation (loss) gain	(0.4)	0.5
Other	(0.4)	0.0
Total other income (expense), net	$ 4.0	$ (1.2)

Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Gain (Loss) On Step-up Of Equity Method Investment

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Other Income (Expense), Net

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