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Supplemental Cash Flow Information - Components of Change in Other Assets and Liabilities Net (Detail) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract] |  |
Other current and noncurrent assets | $ (18,777) | $ (32,332)
Accrued salaries, benefits and payroll taxes | 1,661 | (7,892)
Accrued insurance and other taxes | (3,344) | (134)
Accrued income taxes | 39,122 | 28,047
Accrued pension, postretirement and postemployment benefits | 10,685 | 11,521
Other current and noncurrent liabilities | (23,732) | 30,740
Change in other assets and liabilities, net | $ 5,615 | $ 29,950

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- Definition The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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