XML 46 R31.htm IDEA: XBRL DOCUMENT v2.4.0.8
Inventories (Tables)
6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories consisted of the following:
 
June 30, 2013
 
December 31, 2012
 
(Dollars in millions)
Materials and supplies
$
168.9

 
$
157.6

Raw coal
114.2

 
164.3

Saleable coal
298.5

 
226.5

Total
$
581.6

 
$
548.4