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Investments | 6 Months Ended
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Jun. 30, 2021
Equity Method Investments And Joint Ventures [Abstract] |
Investments | 12. Investments The following is a summary of our investments included in other noncurrent assets in the consolidated balance sheet and the related funding commitments (in millions):
|  | June 30, 2021 |  |  | December 31, 2020 |
|  |  |  |  |  | Funding |  |  |  |  |
|  | Assets |  |  | Commitments |  |  | Assets |
Chem-Mod LLC |  | $ | 4.0 |  |  | $ | — |  |  | $ | 4.0 |
Chem-Mod International LLC |  |  | 2.0 |  |  |  | — |  |  |  | 2.0 |
Clean-coal investments: |  |  |  |  |  |  |  |  |  |  |  |
Non-controlling interest in a limited liability company that owns one 2011 Era Clean Coal Plant |  |  | 0.1 |  |  |  | — |  |  |  | 0.1 |
Controlling interest in limited liability companies that own twenty 2011 Era Clean Coal Plants |  |  | 6.1 |  |  |  | — |  |  |  | 12.4 |
Other investments |  |  | 4.9 |  |  |  | 1.0 |  |  |  | 3.9 |
Total investments |  | $ | 17.1 |  |  | $ | 1.0 |  |  | $ | 22.4 |

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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