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Inventories
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6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2013
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| Inventories [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Inventories |
Inventories valued on the last-in, first-out (LIFO) basis totaled $252 million and $147 million at June 30, 2013, and December 31, 2012, respectively. The estimated excess of current replacement cost over LIFO cost of inventories was approximately $168 million at June 30, 2013, and $200 million at December 31, 2012. |
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