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Inventories - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Inventory Net [Abstract] |  |
U.S. inventories determined by LIFO method | $ 122 | $ 101

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- Definition The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods. + References Reference 1: 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 + Details
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