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Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Losses) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (154,870)	$ (75,357)	$ (163,966)
Other comprehensive income before reclassifications (net of tax)	(43,926)	(89,608)	72,721
Amounts reclassified from accumulated other comprehensive income (net of tax)	8,310	10,095	15,888
Other comprehensive income (loss)	(35,616)	(79,513)	88,609
Ending Balance	(190,486)	(154,870)	(75,357)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(34,224)	15,141	315
Other comprehensive income before reclassifications (net of tax)	(38,817)	(49,365)	14,826
Other comprehensive income (loss)	(38,817)	(49,365)	14,826
Ending Balance	(73,041)	(34,224)	15,141
Unrealized Gain (Loss) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	2,356	(941)	(424)
Other comprehensive income before reclassifications (net of tax)	1,620	2,826	(1,198)
Amounts reclassified from accumulated other comprehensive income (net of tax)	(4,201)	471	681
Other comprehensive income (loss)	(2,581)	3,297	(517)
Ending Balance	(225)	2,356	(941)
Change in Pensions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(120,260)	(89,547)	(159,560)
Other comprehensive income before reclassifications (net of tax)	(12,995)	(40,266)	54,906
Amounts reclassified from accumulated other comprehensive income (net of tax)	12,541	9,553	15,107
Other comprehensive income (loss)	(454)	(30,713)	70,013
Ending Balance	(120,714)	(120,260)	(89,547)
Change in Other Postretirement Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,742)	(10)	(4,297)
Other comprehensive income before reclassifications (net of tax)	6,266	(2,803)	4,187
Amounts reclassified from accumulated other comprehensive income (net of tax)	(30)	71	100
Other comprehensive income (loss)	6,236	(2,732)	4,287
Ending Balance	$ 3,494	$ (2,742)	$ (10)

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 31
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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