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Inventories | 12 Months Ended
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Dec. 31, 2012
Inventory Disclosure [Abstract] |
INVENTORIES |
6. | INVENTORIES
Inventories consisted of the following (in millions):
| December 31,
| 2012 |  | 2011
Refinery feedstocks | $ | 2,458 |  |  | $ | 2,474 |
Refined products and blendstocks | 2,995 |  |  | 2,633 |
Ethanol feedstocks and products | 191 |  |  | 195 |
Convenience store merchandise | 112 |  |  | 103 |
Materials and supplies | 217 |  |  | 218 |
Inventories | $ | 5,973 |  |  | $ | 5,623 |
During the years ended December 31, 2012, 2011, and 2010, we had net liquidations of LIFO inventory layers that were established in prior years, which decreased cost of sales in each of those years by $134 million, $247 million, and $16 million, respectively. The effect of the liquidation in 2010 excludes the impact from the sale of inventory in connection with the sale of our Paulsboro Refinery to PBF Holding. The effect of the 2010 liquidation attributable to the sale of that inventory increased the loss on the sale of the Paulsboro Refinery by $50 million ($31 million after taxes) as discussed in Note 3 and is reflected in discontinued operations. As of December 31, 2012 and 2011, the replacement cost (market value) of LIFO inventories exceeded their LIFO carrying amounts by approximately $6.7 billion and $6.8 billion, respectively.

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- Definition The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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