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Equity Method Investments | 6 Months Ended
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Jun. 30, 2024
Equity Method Investment, Summarized Financial Information [Abstract] |
Equity Method Investments | Equity Method Investments The Company’s equity method investments include its interests in Middlemount Coal Pty Ltd (Middlemount), R3 Renewables LLC (R3) and certain other equity method investments. The table below summarizes the book value of those investments, which are reported in “Investments and other assets” in the condensed consolidated balance sheets, and the related “Loss (income) from equity affiliates”:
|  |  | Loss (Income) from Equity Affiliates
| Book Value at |  | Three Months Ended June 30, |  | Six Months Ended June 30,
| June 30, 2024 |  | December 31, 2023 |  | 2024 |  | 2023 |  | 2024 |  | 2023
| (Dollars in millions)
Equity method investment related to Middlemount | $ | 43.0 |  |  | $ | 42.5 |  |  | $ | (2.3) |  |  | $ | (4.1) |  |  | $ | (1.9) |  |  | $ | (6.7) |
Equity method investment related to R3 | 8.6 |  |  | 7.1 |  |  | 3.6 |  |  | 1.8 |  |  | 6.9 |  |  | 2.6 |
Total equity method investments | $ | 51.6 |  |  | $ | 49.6 |  |  | $ | 1.3 |  |  | $ | (2.3) |  |  | $ | 5.0 |  |  | $ | (4.1) |
R3 The Company contributed $8.4 million and $3.5 million to R3 during the six months ended June 30, 2024 and 2023, respectively.

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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/recommendedDisclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 323 -Publisher FASB -URI https://asc.fasb.org/323/tableOfContent + Details
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