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Long-Term Debt - Additional Information (Detail) | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended |  | 0 Months Ended | 12 Months Ended |
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Dec. 31, 2013 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2013 Joint Venture Jordan Bromine Company Limited USD ($) | Dec. 31, 2012 Joint Venture Jordan Bromine Company Limited USD ($) | Dec. 31, 2012 Joint Venture Jordan Bromine Company Limited Unsecured non-interest bearing loan USD ($) | Dec. 31, 2013 Joint Venture Jordan Bromine Company Limited Construction Borrowings Related To Foreign Plant USD ($) | Dec. 31, 2012 Joint Venture Jordan Bromine Company Limited Construction Borrowings Related To Foreign Plant USD ($) | Dec. 31, 2013 Joint Venture Jordan Bromine Company Limited Short-term Debt USD ($) | Dec. 31, 2013 Commercial Paper USD ($) | Dec. 31, 2005 5.10% Senior Notes | Dec. 31, 2013 5.10% Senior Notes | Dec. 31, 2012 5.10% Senior Notes | Jan. 20, 2005 5.10% Senior Notes USD ($) | Dec. 31, 2010 4.50% Senior Notes | Dec. 31, 2013 4.50% Senior Notes | Dec. 31, 2012 4.50% Senior Notes | Dec. 10, 2010 4.50% Senior Notes USD ($) | Dec. 31, 2013 Domestic Financial Institution Agreement USD ($) | Dec. 31, 2012 Domestic Financial Institution Agreement | Dec. 31, 2011 Domestic Financial Institution Agreement | Dec. 31, 2013 Foreign Credit Line U.S. Dollar- Euro Denominated Borrowings USD ($) | Dec. 31, 2012 Foreign Credit Line U.S. Dollar- Euro Denominated Borrowings USD ($) | Dec. 31, 2013 Yen Denominated Credit Lines USD ($) | Dec. 31, 2013 Yen Denominated Credit Lines JPY (¥) | Dec. 31, 2011 Yen Denominated Credit Lines | Dec. 31, 2013 Other Foreign Credit Lines USD ($) | Dec. 31, 2013 Other Foreign Credit Lines Foreign Subsidiaries USD ($) | Dec. 31, 2013 Minimum Joint Venture Jordan Bromine Company Limited Construction Borrowings Related To Foreign Plant | Dec. 31, 2013 Maximum Joint Venture Jordan Bromine Company Limited Construction Borrowings Related To Foreign Plant | May 29, 2013 Maximum Commercial Paper USD ($) | Jan. 22, 2014 Subsequent Event Jp Morgan USD ($) payment | Dec. 31, 2013 Revolving Credit Facility USD ($) | Dec. 31, 2013 Revolving Credit Facility Minimum | Dec. 31, 2013 Revolving Credit Facility Maximum | Feb. 07, 2014 Revolving Credit Facility Subsequent Event USD ($) | Dec. 31, 2013 Revolving Credit Facility Subsequent Event | Feb. 07, 2014 Revolving Credit Facility Subsequent Event Minimum | Feb. 07, 2014 Revolving Credit Facility Subsequent Event Maximum
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2014 | $ 24,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2015 | 327,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2016 | 379,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2017 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2018 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, thereafter | 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity period |  |  |  |  |  |  |  |  |  | 21 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 years |  |  |  | 5 years |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000,000 |  |  | 48,000,000 | 48,000,000 | 42,800,000 | 4,500,000,000.0 |  | 93,300,000 | 80,100,000 |  |  |  |  | 750,000,000.0 |  |  | 750,000,000.0 |  |  |
Revolving senior credit facility, additional borrowings | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000,000 |  |  |
Total spreads and fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.975% | 0.90% | 1.40% | 1.00% |  | 0.90% | 1.50%
Debt covenant maximum debt to EBITDA |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.50 |  |
Debt covenant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |
Gross debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 750,000,000.0 |  |  |  |  |  |  |  |
Commercial paper notes | 363,000,000 |  | 0 |  |  |  |  |  |  | 363,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average interest rate |  |  |  |  |  |  |  |  |  | 0.23% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fees and expenses related to new agreement |  | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  |  |  |  |  |  | 325,000,000.0 |  |  |  | 350,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  | 1.59% |  |  | 5.10% | 5.10% | 5.10% |  | 4.50% | 4.50% | 4.50% |  |  |  |  |  |  |  |  |  |  | 2.09% | 5.30% |  |  |  |  |  |  |  |  |
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.19% |  |  |  | 4.70% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity date of debt |  |  |  |  |  |  |  |  |  |  | Feb. 01, 2015 |  |  |  | Dec. 15, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average interest rate on borrowings |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.89% | 1.49% | 1.43% |  |  | 0.52% | 0.52% | 1.07% |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding under the credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving senior credit facility, remaining borrowings | 387,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency denominated debt | 1,078,864,000 |  | 699,288,000 | 26,400,000 | 26,400,000 |  | 7,900,000 | 13,500,000 | 18,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-interest loan from other shareholders |  |  |  |  |  | 6,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional borrowing capacity amount |  |  |  | 6,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Semi Annual Coupon Payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 325,000,000 |  |  |  |  |  |  |
Fixed interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.281% |  |  |  |  |  |  |

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