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Investments - Investments in Equity Securities Narratives (Details) € in Millions, $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Mar. 31, 2022 EUR (€)
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | $ 78.0 |  | $ 77.8 |
(Decrease) increase in fair value of investments in equity securities | (2.6) |  |  |
Payments to acquire equity interest | 3.4 |  |  |
Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Payments to acquire equity interest | 0.5 |  |  |
Investment in Equity Securities Level 1 |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | 26.9 |  | 31.3 |
(Decrease) increase in fair value of investments in equity securities | (3.7) |  |  |
Payments to acquire equity interest | 0.0 |  |  |
Investment in Equity Securities, Level 2 |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | 7.4 |  | 6.2 |
(Decrease) increase in fair value of investments in equity securities | 1.1 |  |  |
Payments to acquire equity interest | 0.0 |  |  |
McPhy |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | 26.9 |  | 31.3 |
(Decrease) increase in fair value of investments in equity securities | (3.7) | $ (2.6) |  |
Stabilis Energy, Inc. |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | 7.4 |  | 6.2 |
(Decrease) increase in fair value of investments in equity securities | 1.1 | 5.9 |  |
Transform Materials |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Payments to acquire equity interest | 25.1 |  | 25.1 |
Svante Inc. |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Payments to acquire equity interest | 15.2 |  | $ 15.2 |
Clean H2 Infra Fund |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities | 2.4 |  |  | € 2.2
Gold Hydrogen LLC |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |
Investments in equity securities |  | $ 1.0 |  |
Payments to acquire equity interest | $ 1.0 |  |  |

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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). + 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 http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
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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 http://asc.fasb.org/extlink&oid=123583714&loc=SL75117360-209713 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3444-108585 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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