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Investments - Schedule of Company Investments (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Jul. 31, 2025 company	Dec. 31, 2024 USD ($)
Schedule of Investments [Line Items]
Total	$ 1.8		$ 1.8			$ 3.6
Number of publicly traded companies | company					2
Income (loss) from equity investees	0.0	$ 0.0	(5.9)	$ (2.3)
Common Stock
Schedule of Investments [Line Items]
Equity method	0.9		0.9			0.9
Fair value	0.0		0.0			1.8
Measurement alternative	0.9		0.9			0.9
Total	$ 1.8		$ 1.8			$ 3.6

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