Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details 6)

v2.4.1.9
EMPLOYEE BENEFIT PLANS (Details 6) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
SUPPLEMENTAL SALARY DEFERRAL PLAN AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN      
Maximum percentage of salary which participant can defer under Huntsman supplemental deferral plan 75.00%hun_DeferredCompensationArrangementWithIndividualPercentageOfSalaryMaximumDefer    
Carrying amount of assets included in other noncurrent assets $ 24us-gaap_DeferredCompensationPlanAssets $ 21us-gaap_DeferredCompensationPlanAssets  
Deferred compensation expense 1hun_DeferredCompensationArrangementCompensationExpense 1hun_DeferredCompensationArrangementCompensationExpense 1hun_DeferredCompensationArrangementCompensationExpense
STOCK-BASED INCENTIVE PLAN      
Authorized number of shares to be granted under the Stock Incentive Plan 37.2us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized    
Money purchase pension plan      
DEFINED CONTRIBUTION PLANS      
Employer contribution limit (as a percent of compensation) 8.00%hun_DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation
/ us-gaap_DefinedContributionPlanNameAxis
= hun_MoneyPurchasePensionPlanMember 		   
Salary deferral plan      
DEFINED CONTRIBUTION PLANS      
Employer contribution limit (as a percent of compensation) 2.00%hun_DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanMember 		   
Employer matching contribution as a percentage of employee's contribution 50.00%hun_DefinedContributionPlanEmployerContributionAsPercentageOfEmployeesContribution
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanMember 		   
Salary deferral plan for new hires      
DEFINED CONTRIBUTION PLANS      
Employer contribution limit (as a percent of compensation) 4.00%hun_DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanForNewHiresMember 		   
Employer matching contribution as a percentage of employee's contribution 100.00%hun_DefinedContributionPlanEmployerContributionAsPercentageOfEmployeesContribution
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanForNewHiresMember 		   
Period of service, to be achieved by the employees, to receive additional matching percentage 6 years    
U.S. Other Postretirement Benefit Plans      
DEFINED CONTRIBUTION PLANS      
Total defined contribution expense 15us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember 		14us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember 		14us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember
Non-U.S. Other Postretirement Benefit Plans      
DEFINED CONTRIBUTION PLANS      
Total defined contribution expense $ 14us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember 		$ 14us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember 		$ 14us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember
Non-U.S. Other Postretirement Benefit Plans | Salary deferral plan      
DEFINED CONTRIBUTION PLANS      
Employer contribution limit (as a percent of compensation) 15.00%hun_DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanMember
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember 		   
Non-U.S. Other Postretirement Benefit Plans | Salary deferral plan for new hires      
DEFINED CONTRIBUTION PLANS      
Employer contribution limit (as a percent of compensation) 12.00%hun_DefinedContributionPlanEmployerContributionLimitPercentageOfCompensation
/ us-gaap_DefinedContributionPlanNameAxis
= hun_SalaryDeferralPlanForNewHiresMember
/ us-gaap_DefinedContributionPlanTypeAxis
= us-gaap_ForeignPostretirementBenefitPlansDefinedBenefitMember 		   
Non-U.S. Other Postretirement Benefit Plans | Huntsman UK Pension Plan      
DEFINED CONTRIBUTION PLANS      
Transition period for contributions 5 years