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Investments - Investments in Equity Securities Narratives (Details) € in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 EUR (€)	Dec. 31, 2021 USD ($)
Debt and Equity Securities, FV-NI
Investments in equity securities	$ 66.2			$ 66.2			$ 77.8
Decrease in fair value of investments in equity securities				(12.2)
Payments to acquire equity interest				3.4
McPhy
Debt and Equity Securities, FV-NI
Investments in equity securities	17.0			17.0			31.3
Decrease in fair value of investments in equity securities	(8.2)		$ (17.2)	(11.9)	$ (19.8)
Stabilis Energy, Inc.
Debt and Equity Securities, FV-NI
Investments in equity securities	5.9			5.9			6.2
Decrease in fair value of investments in equity securities	(1.4)		4.7	(0.3)	10.6
Transform Materials
Debt and Equity Securities, FV-NI
Investments in equity securities	25.1			25.1			25.1
Svante Inc.
Debt and Equity Securities, FV-NI
Investments in equity securities	15.2			15.2			$ 15.2
Hy24
Debt and Equity Securities, FV-NI
Investments in equity securities	$ 2.0			$ 2.0		€ 2.0
Gold Hydrogen LLC
Debt and Equity Securities, FV-NI
Investments in equity securities			$ 1.0		$ 1.0
Payments to acquire equity interest		$ 1.0

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(2))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=123583714&loc=SL75117360-209713

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-Name Accounting Standards Codification
-Topic 230
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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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-Paragraph 13
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