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Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details 5)

v2.4.1.9
EMPLOYEE BENEFIT PLANS (Details 5) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Real Estate/Other | Significant unobservable inputs (Level 3) Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Balance at beginning of period $ 76us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
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= us-gaap_FairValueInputsLevel3Member 		$ 68us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
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Return on pension plan assets 5hun_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetReturnOnPensionPlanAssets
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Purchases, sales and settlements 6us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
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Acquisition date fair value of pension plan assets acquired 9hun_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAcquisitionDateFairValueOfPensionAssetsAcquired
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Balance at end of period 96us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
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Defined Benefit Plans Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 3,300us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_PensionPlansDefinedBenefitMember 		3,200us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Defined Benefit Plans | Minimum Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Expected long term rate of return on the pension assets (as a percent) 5.75%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
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Defined Benefit Plans | Maximum Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Expected long term rate of return on the pension assets (as a percent) 8.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
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U.S. Defined Benefit Plans Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 761us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Expected long term rate of return on the pension assets (as a percent) 7.75%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember 		7.75%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
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= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember 		8.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
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Target allocation (as a percent) 100.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember 		100.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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U.S. Defined Benefit Plans | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 761us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 391us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 319us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Recurring basis | Significant unobservable inputs (Level 3) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 51us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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= us-gaap_FairValueMeasurementsRecurringMember 		Ìý
U.S. Defined Benefit Plans | Equities Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 54.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 60.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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= us-gaap_EquitySecuritiesMember
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= us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember 		57.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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U.S. Defined Benefit Plans | Equities | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 454us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Equities | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 268us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Equities | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 186us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Fixed income Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 33.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 28.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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U.S. Defined Benefit Plans | Fixed income | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 216us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Fixed income | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 83us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Fixed income | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 133us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Real Estate/Other Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 13.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 11.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 85us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 34us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis | Significant unobservable inputs (Level 3) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 51us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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U.S. Defined Benefit Plans | Cash Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Actual allocation (as a percent) 1.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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U.S. Defined Benefit Plans | Cash | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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U.S. Defined Benefit Plans | Cash | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Fair Value Measurements of Plan Assets Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 2,587us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Non-U.S. Defined Benefit Plans | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Recurring basis | Significant unobservable inputs (Level 3) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Equities Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 37.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 36.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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Non-U.S. Defined Benefit Plans | Equities | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Equities | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Equities | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Fixed income Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 46.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Non-U.S. Defined Benefit Plans | Fixed income | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Fixed income | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Fixed income | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Real Estate/Other Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 11.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
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Actual allocation (as a percent) 15.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
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Non-U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
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Non-U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 310us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Non-U.S. Defined Benefit Plans | Real Estate/Other | Recurring basis | Significant unobservable inputs (Level 3) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 45us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
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Non-U.S. Defined Benefit Plans | Cash Ìý Ìý Ìý
Fair Value Measurements of Plan Assets Ìý Ìý Ìý
Target allocation (as a percent) 6.00%us-gaap_DefinedBenefitPlanTargetPlanAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember 		Ìý Ìý
Actual allocation (as a percent) 2.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember 		11.00%us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember 		Ìý
Non-U.S. Defined Benefit Plans | Cash | Recurring basis Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 64us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		82us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		Ìý
Non-U.S. Defined Benefit Plans | Cash | Recurring basis | Quoted prices in active markets for identical assets (Level 1) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets 59us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		80us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		Ìý
Non-U.S. Defined Benefit Plans | Cash | Recurring basis | Significant other observable inputs (Level 2) Ìý Ìý Ìý
DEFINED BENEFIT AND OTHER POSTRETIREMENT BENEFIT PLANS Ìý Ìý Ìý
Fair value of plan assets $ 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		$ 2us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CashMember
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember 		Ìý