XML 38 R26.htm IDEA: XBRL DOCUMENT v3.22.2
Inventories (Tables)
6 Months Ended
Jun. 30, 2022
Inventory Disclosure [Abstract]  
Schedule of Inventories Inventories, net” as of June 30, 2022 and December 31, 2021 consisted of the following:
June 30, 2022December 31, 2021
 (Dollars in millions)
Materials and supplies, net$116.9 $102.1 
Raw coal63.4 54.6 
Saleable coal72.6 70.0 
Inventories, net$252.9 $226.7