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Investments - Equity Method Investments Narratives (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | May 04, 2022 | Dec. 31, 2021 | Aug. 27, 2021
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments | $ 91.7 |  |  | $ 91.7 |  |  | $ 99.6 |
Equity in earnings (loss) of unconsolidated affiliates, net |  |  |  | (0.3) | $ 0.1 |  |  |
Realized gain on equity method investment | 0.0 |  | $ 0.0 | 0.3 | 0.0 |  |  |
Cryomotive GmbH |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments | 4.9 |  |  | 4.9 |  |  | 7.1 |
Equity in earnings (loss) of unconsolidated affiliates, net | (0.4) |  | 0.3 | (1.3) | 0.3 |  |  |
HTEC |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments | 79.6 |  |  | 79.6 |  |  | 86.4 |
Equity in earnings (loss) of unconsolidated affiliates, net | 0.2 |  |  | (0.3) |  |  |  |
Hudson Products de Mexico S.A. de CV |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments | 4.0 |  |  | 4.0 |  |  | 3.3 |
Equity in earnings (loss) of unconsolidated affiliates, net | $ 0.3 |  | 0.1 | $ 0.9 | 0.2 |  |  |
Equity investments, ownership interest (percent) | 50.00% |  |  | 50.00% |  |  |  |
Liberty LNG |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments | $ 2.8 |  |  | $ 2.8 |  |  | $ 2.4 |
Equity in earnings (loss) of unconsolidated affiliates, net | $ 0.2 |  | $ 0.1 | $ 0.4 | $ 0.2 |  |  |
Equity investments, ownership interest (percent) | 25.00% |  |  | 25.00% |  |  |  |
Other Investments |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity in earnings (loss) of unconsolidated affiliates, net |  |  |  | $ 0.4 |  |  |  |
AdEdge India |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |
Equity method investments |  |  |  |  |  |  |  | $ 0.5
Equity investments, ownership interest (percent) |  | 50.00% |  |  |  | 50.00% |  | 50.00%
Realized gain on equity method investment |  | $ 0.3 |  |  |  |  |  |

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