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Foreign Currency Transaction Gains and Losses (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Currency Transaction Gains (Losses) [Line Items] |  |
Net transaction (losses) gains | $ (38,831) | $ 10,979
Operating income |  |
Currency Transaction Gains (Losses) [Line Items] |  |
Net transaction (losses) gains | (11,842) | 11,904
Non-operating income/expense |  |
Currency Transaction Gains (Losses) [Line Items] |  |
Net transaction (losses) gains | (26,989) | $ (925)
Venezuelan bolívar fuerte |  |
Currency Transaction Gains (Losses) [Line Items] |  |
Unrealized loss on foreign currency exchange | $ 26,000 |

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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894 + Details
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