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Investments - Additional Information (Detail) | 12 Months Ended |  |  | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2014 Significant Unconsolidated Joint Venture USD ($) | Dec. 31, 2013 Significant Unconsolidated Joint Venture USD ($) | Dec. 31, 2012 Significant Unconsolidated Joint Venture USD ($) | Dec. 31, 2014 Joint Venture Saudi Organometallic Chemicals Company SAR | Dec. 31, 2012 Joint Venture Saudi Organometallic Chemicals Company USD ($) | Dec. 31, 2014 Joint Venture Saudi Organometallic Chemicals Company USD ($) | Dec. 31, 2013 Joint Venture Saudi Organometallic Chemicals Company | Dec. 31, 2012 Eurecat S.A. EUR (€) | Dec. 31, 2014 Eurecat S.A. USD ($) | Dec. 31, 2013 Eurecat S.A. USD ($) | Dec. 31, 2014 Nippon Aluminum Alkyls | Dec. 31, 2013 Nippon Aluminum Alkyls | Dec. 31, 2012 Nippon Aluminum Alkyls | Dec. 31, 2014 Magnifin Magnesiaprodukte GmbH & Co. KG | Dec. 31, 2013 Magnifin Magnesiaprodukte GmbH & Co. KG | Dec. 31, 2012 Magnifin Magnesiaprodukte GmbH & Co. KG | Dec. 31, 2014 Nippon Ketjen Company Limited | Dec. 31, 2013 Nippon Ketjen Company Limited | Dec. 31, 2012 Nippon Ketjen Company Limited | Dec. 31, 2014 Eurecat S.A. | Dec. 31, 2013 Eurecat S.A. | Dec. 31, 2012 Eurecat S.A. | Dec. 31, 2014 Fabrica Carioca de Catalisadores S.A. | Dec. 31, 2013 Fabrica Carioca de Catalisadores S.A. | Dec. 31, 2012 Fabrica Carioca de Catalisadores S.A. | Dec. 31, 2014 Stannica, LLC | Dec. 31, 2013 Stannica, LLC | Dec. 31, 2012 Stannica, LLC | Dec. 31, 2014 Stannica Llc USD ($) | Dec. 31, 2013 Stannica Llc USD ($) | Dec. 31, 2014 Benefit Protection Trust USD ($) | Dec. 31, 2013 Benefit Protection Trust USD ($)
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in significant unconsolidated joint ventures |  |  |  |  |  | $ 154,400,000 alb_InvestmentInSignificantUnconsolidatedJointVentures / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | $ 172,900,000 alb_InvestmentInSignificantUnconsolidatedJointVentures / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity in net income of unconsolidated investments (net of tax) | 35,742,000 us-gaap_IncomeLossFromEquityMethodInvestments |  | 31,729,000 us-gaap_IncomeLossFromEquityMethodInvestments |  | 38,067,000 us-gaap_IncomeLossFromEquityMethodInvestments | 35,400,000 us-gaap_IncomeLossFromEquityMethodInvestments / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | 31,500,000 us-gaap_IncomeLossFromEquityMethodInvestments / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | 37,000,000 us-gaap_IncomeLossFromEquityMethodInvestments / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Undistributed earnings from equity method investees |  |  |  |  |  | 112,900,000 us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | 117,100,000 us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends received from unconsolidated investments | 40,688,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions |  | 21,632,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions |  | 26,908,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions | 39,600,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | 20,500,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember | 25,600,000 us-gaap_EquityMethodInvestmentDividendsOrDistributions / alb_JointVentureAxis = alb_SignificantUnconsolidatedJointVentureMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures exceeded the amount of underlying equity in net assets | 7,000,000 us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity |  | 8,400,000 us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess amount paid for joint ventures remaining to be amortized | 1,000,000 alb_ExcessAmountPaidForJointVenturesRemainingToBeAmortized |  | 1,400,000 alb_ExcessAmountPaidForJointVenturesRemainingToBeAmortized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of unconsolidated investment | 0 us-gaap_EquityMethodInvestments |  | 0 us-gaap_EquityMethodInvestments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,200,000 us-gaap_EquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = alb_StannicaLLCMember | 5,500,000 us-gaap_EquityMethodInvestments / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = alb_StannicaLLCMember |  |
Marketable equity securities | 23,974,000 us-gaap_MarketableSecuritiesNoncurrent |  | 23,801,000 us-gaap_MarketableSecuritiesNoncurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,200,000 us-gaap_MarketableSecuritiesNoncurrent / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_TrustForBenefitOfEmployeesMember | 23,000,000 us-gaap_MarketableSecuritiesNoncurrent / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_TrustForBenefitOfEmployeesMember
Long-term advances to joint ventures | 7,499,000 us-gaap_PaymentsForAdvanceToAffiliate |  | 0 us-gaap_PaymentsForAdvanceToAffiliate |  | 24,959,000 us-gaap_PaymentsForAdvanceToAffiliate |  |  |  | 28,100,000 us-gaap_PaymentsForAdvanceToAffiliate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember | 22,500,000 us-gaap_PaymentsForAdvanceToAffiliate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember |  |  | 1,900,000 us-gaap_PaymentsForAdvanceToAffiliate / alb_JointVentureAxis = alb_JointVentureEurecatSAMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term advances to joint ventures | $ 34,084,000 us-gaap_AdvancesToAffiliate | [1] | $ 25,124,000 us-gaap_AdvancesToAffiliate | [1] |  |  |  |  |  |  | $ 7,500,000 us-gaap_AdvancesToAffiliate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember |  |  | $ 2,300,000 us-gaap_AdvancesToAffiliate / alb_JointVentureAxis = alb_JointVentureEurecatSAMember | $ 2,600,000 us-gaap_AdvancesToAffiliate / alb_JointVentureAxis = alb_JointVentureEurecatSAMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  |  |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember |  |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / alb_JointVentureAxis = alb_JointVentureEurecatSAMember |  | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponAluminumAlkylsMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponAluminumAlkylsMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponAluminumAlkylsMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureMagnifinMagnesiaprodukteGmbhAndCompanyKgMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureMagnifinMagnesiaprodukteGmbhAndCompanyKgMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureMagnifinMagnesiaprodukteGmbhAndCompanyKgMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponKetjenCompanyLimitedMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponKetjenCompanyLimitedMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureNipponKetjenCompanyLimitedMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureEurecatSAMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureEurecatSAMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureEurecatSAMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureFabricaCariocaDeCatalisadoresMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureFabricaCariocaDeCatalisadoresMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureFabricaCariocaDeCatalisadoresMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureStannicaLLCMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureStannicaLLCMember | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / dei_LegalEntityAxis = alb_JointVentureStannicaLLCMember |  |  |  |
Interest rate margin over LIBOR |  |  |  |  |  |  |  |  |  |  | 1.275%us-gaap_LoansReceivableBasisSpreadOnVariableRate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage |  |  |  |  |  |  |  |  |  |  | 1.53%alb_LoansAndLeasesReceivableInterestRate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember | 1.52%alb_LoansAndLeasesReceivableInterestRate / alb_JointVentureAxis = alb_JointVentureSaudiOrganometallicChemicalsCompanyMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term advances to joint venture, maturity date |  |  |  |  |  |  |  |  | Dec. 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | See Note 9, “Investments.”

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- Definition Long-Term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances to clients. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.2) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 2 -Article 6 + Details
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- Definition Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
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