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v3.19.3.a.u2

Segment and Geographic Information Segment Results (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Apr. 01, 2017 | Dec. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 1,117.4 | $ 1,106.4 | $ 1,149.0 | $ 1,250.6 | $ 1,397.1 | $ 1,412.6 | $ 1,309.4 | $ 1,462.7 | $ 1,326.2 | $ 4,252.6 | $ 4,623.4 | $ 5,581.8
Adjusted EBITDA |  |  |  |  |  |  |  |  | 341.3 | 1,145.3 | 837.1 | 1,379.3
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 32.8 | 166.6 | 285.4 | 301.0
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.5 | 0.0 | 0.0 | 0.5
Income from equity affiliates | $ (10.9) | $ (20.7) | $ (9.7) |  |  | $ (17.2) | $ (25.2) | $ (22.0) | (15.0) | (49.0) | (3.4) | (68.1)
Powder River Basin Mining |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 394.3 | 1,178.7 | 1,228.7 | 1,424.8
Adjusted EBITDA |  |  |  |  |  |  |  |  | 91.7 | 278.8 | 221.2 | 284.5
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 19.3 | 32.6 | 42.8 | 81.0
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.0 |  |  | 0.0
Income from equity affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.0
Midwestern U.S. Mining |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 193.2 | 592.3 | 669.7 | 801.0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 50.0 | 124.4 | 130.7 | 145.2
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 2.8 | 21.7 | 35.9 | 46.6
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.0 |  |  | 0.0
Income from equity affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.0
Western U.S. Mining |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 149.7 | 440.7 | 639.7 | 592.0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 50.0 | 131.8 | 230.7 | 145.4
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 3.1 | 13.8 | 18.1 | 13.9
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.5 |  |  | 0.5
Income from equity affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.0
Seaborne Metallurgical Mining |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 328.9 | 1,221.0 | 1,033.1 | 1,553.0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 109.6 | 414.9 | 140.2 | 441.4
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 5.2 | 56.0 | 143.4 | 88.7
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.0 |  |  | 0.0
Income from equity affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.0
Seaborne Thermal Mining |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 224.8 | 772.5 | 971.7 | 1,099.2
Adjusted EBITDA |  |  |  |  |  |  |  |  | 75.6 | 306.6 | 329.4 | 452.0
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 2.3 | 39.2 | 42.1 | 66.6
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.0 |  |  | 0.0
Income from equity affiliates |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 35.3 | 47.4 | 80.5 | 111.8
Adjusted EBITDA |  |  |  |  |  |  |  |  | (35.6) | (111.2) | (215.1) | (89.2)
Additions to property, plant, equipment and mine development |  |  |  |  |  |  |  |  | 0.1 | 3.3 | 3.1 | 4.2
Federal coal lease expenditures |  |  |  |  |  |  |  |  | 0.0 |  |  | 0.0
Income from equity affiliates |  |  |  |  |  |  |  |  | $ (15.0) | $ (49.0) | $ (3.4) | $ (68.1)

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