Financial Instruments - Summary of Marketable Securities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Marketable equity securities:
Amortized Cost	$ 668.7	$ 979.9
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(489.0)	(563.1)
Fair Value	179.7	416.8
Marketable equity securities, current
Marketable equity securities:
Amortized Cost		31.6
Gross Unrealized Gains		0.0
Gross Unrealized Losses		(21.0)
Fair Value		10.6
Marketable equity securities, non-current
Marketable equity securities:
Amortized Cost	668.7	948.3
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(489.0)	(542.1)
Fair Value	$ 179.7	$ 406.2

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Equity Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, Before Tax

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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), classified as current.

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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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