Financial Instruments (Details 1) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Marketable equity securities
Amortized Cost	$ 668.7	$ 668.7
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(521.8)	(489.0)
Fair Value	146.9	179.7
Equity Securities, Non-Current
Marketable equity securities
Amortized Cost	668.7	668.7
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(521.8)	(489.0)
Fair Value	$ 146.9	$ 179.7

Equity Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482736/825-10-45-1A

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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