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Supplementary Financial Information- Schedule of Other (Expense) Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Offsetting [Abstract]
Gain on step-up of equity method investment	$ 0.0	$ 0.0	$ 4.4	$ 0.0
Net loss on extinguishment of debt	(0.3)	0.0	(0.3)	(2.2)
Interest income	0.1	0.5	0.5	1.0
Foreign currency translation (losses) gains	(0.5)	(0.3)	(0.9)	0.2
Unrealized fair value gain on securities	0.3	0.0	0.5	0.0
Other	0.1	0.0	(0.5)	0.0
Total other (expense) income, net	$ (0.3)	$ 0.2	$ 3.7	$ (1.0)

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- Definition

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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