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Short-Term Investments - Equity Securities (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Equity Securities, FV-NI [Abstract]
Equity securities	$ 1.2	$ 1.0
Debt Securities, Trading, and Equity Securities, FV-NI, Cost [Abstract]
Equity securities with an initial cost	0.5
Equity Securities, FV-NI, Unrealized Gain (Loss) [Abstract]
Equity securities unrealized gain (loss)	$ 0.7	$ 0.5

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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