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Investment Balances (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Investments [Abstract]    
Joint ventures $ 169,891us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures $ 187,843us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Nonmarketable securities 177alb_NonmarketableSecurities 534alb_NonmarketableSecurities
Marketable equity securities 23,974us-gaap_MarketableSecuritiesNoncurrent 23,801us-gaap_MarketableSecuritiesNoncurrent
Total $ 194,042us-gaap_LongTermInvestments $ 212,178us-gaap_LongTermInvestments