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Inventories | 6 Months Ended
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Jun. 30, 2019
Inventory Disclosure [Abstract] |
Inventories | Inventories Inventories as of June 30, 2019 and December 31, 2018 consisted of the following:
| June 30, 2019 |  | December 31, 2018
| (Dollars in millions)
Materials and supplies | $ | 123.8 |  |  | $ | 118.1 |
Raw coal | 74.9 |  |  | 53.6 |
Saleable coal | 123.4 |  |  | 108.5 |
Total | $ | 322.1 |  |  | $ | 280.2 |
Materials and supplies inventories presented above have been shown net of reserves of $0.8 million and $0.2 million as of June 30, 2019 and December 31, 2018, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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