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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
	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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Defined benefit plan cash and cash equivalents.

+ References

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- Definition

Defined Benefit Plan Target Allocation Percentage Of Assets Debt Fixed Income Securities

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- Definition

Defined benefit plans target allocation percentage.

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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

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