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Equity and Other Investments and Fair Value Measurements - Convertible Promissory Note in Lyndra (Details) - Lyndra Convertible Note - Lyndra - USD ($) $ in Millions		3 Months Ended	9 Months Ended
	Feb. 27, 2025	Sep. 30, 2025	Sep. 30, 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible notes face value	$ 9.2
Debt Instrument, Interest Rate, Effective Percentage	8.00%
Debt instrument percentage premium on principal on default			20.00%
Debt instrument maturity date	Nov. 27, 2025
Equity and long-term investments at fair value		$ 6.8	$ 6.8
Unrealized loss from fair value changes in equity investments		$ 2.4	$ 2.4

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