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Income Taxes Changes in Balance of Deferred Tax Asset Valuation Allowance (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Deferred Tax Asset Valuation Allowance [Roll Forward] |  |  |  |  |
Beginning Balance |  | $ (84,137) | $ (30,768) |  | $ (33,757)
Additions |  | (20,568) | (59,889) | [1] | (1,895)
Deductions |  | 34,805 | 6,520 |  | 4,884
Ending Balance |  | (69,900) | (84,137) |  | (30,768)
Income Taxes [Line Items] |  |  |  |  |
Additions related to the acquisition of Rockwood |  | $ 20,568 | 59,889 | [1] | $ 1,895
Rockwood Holdings, Inc. |  |  |  |  |
Deferred Tax Asset Valuation Allowance [Roll Forward] |  |  |  |  |
Additions | [1] |  | (42,000) |  |
Income Taxes [Line Items] |  |  |  |  |
Additions related to the acquisition of Rockwood | [1] |  | $ 42,000 |  |
[1] | Additions for the year ended December 31, 2015 includes $42.0 million related to the acquisition of Rockwood.

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- Definition Deferred Tax Assets Valuation Allowance, Decrease + References No definition available. + Details
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- Definition Deferred Tax Assets Valuation Allowance, Increase + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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- Details
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