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Long-Term Employee Benefit Liabilities - Schedule of Company's Defined Benefit Pension Plans (Parenthetical) (Detail) - Pension Plan, Defined Benefit [Member] | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |
Equity securities |  | 58.00%
Fixed income securities |  | 41.00%
Cash and cash equivalents |  | 1.00%
Total |  | 100.00%
Scenario, Forecast [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 100.00% |
Minimum [Member] | Scenario, Forecast [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Equity securities | 40.00% |
Fixed income securities | 30.00% |
Cash and cash equivalents | 0.00% |
Maximum [Member] | Scenario, Forecast [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Equity securities | 80.00% |
Fixed income securities | 50.00% |
Cash and cash equivalents | 10.00% |

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- Definition Defined Benefit Plan Target Allocation Percentage Of Assets Debt Fixed Income Securities + References No definition available. + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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