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Inventories - Additional Information (Detail) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($)
Inventory Disclosure [Abstract] |
Impact on income as a result of LIFO liquidations | $ 0

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- Definition The effect of liquidating LIFO (last in first out) inventory layers on income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SAB Topic 11.F) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100079-122729 + Details
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Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration