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Investments | 3 Months Ended
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Mar. 31, 2017
Equity Method Investments and Joint Ventures [Abstract] |
Investments |
11. | 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):
|  | March 31, 2017 |  |  | December 31, |
|  |  |  |  | Funding |  |  | 2016 |
|  | Assets |  |  | Commitments |  |  | Assets |
Chem-Mod LLC |  | $ | 4.0 |  |  | $ | — |  |  | $ | 4.0 |
Chem-Mod International LLC |  |  | 2.0 |  |  |  | — |  |  |  | 2.0 |
Clean-coal investments: |  |  |  |  |  |  |  |  |  |  |  |
Controlling interest in six limited liability companies that own fourteen 2009 Era Clean Coal Plants |  |  | 13.3 |  |  |  | — |  |  |  | 14.3 |
Non-controlling interest in one limited liability company that owns one 2011 Era Clean Coal Plant |  |  | 0.7 |  |  |  | — |  |  |  | 0.7 |
Controlling interest in seventeen limited liability companies that own nineteen 2011 Era Clean Coal Plants |  |  | 69.5 |  |  |  | — |  |  |  | 69.0 |
Other investments |  |  | 3.8 |  |  |  | 0.4 |  |  |  | 3.7 |
Total investments |  | $ | 93.3 |  |  | $ | 0.4 |  |  | $ | 93.7 |

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=64825282&loc=d3e32847-111569 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=64825282&loc=d3e32787-111569 + Details
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