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Operating Segments and Geographic Area Information - Summarized Financial Information by Reportable Segments Footnote (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting [Abstract] |  |  |
Pension and OPEB items | $ (127.2)alb_DefinedBenefitPensionAndOtherPostretirementCreditsCostsIncludedInCorporateAndOther | $ 143.1 alb_DefinedBenefitPensionAndOtherPostretirementCreditsCostsIncludedInCorporateAndOther | $ (68.0)alb_DefinedBenefitPensionAndOtherPostretirementCreditsCostsIncludedInCorporateAndOther

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- Definition Defined benefit pension and other postretirement credits (costs) included in corporate and other + References No definition available. + Details
Name: | alb_DefinedBenefitPensionAndOtherPostretirementCreditsCostsIncludedInCorporateAndOther
Namespace Prefix: | alb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration