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INCOME TAXES (Details 2) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2014
Income taxes |  |  |  |  |  |  |
Net short-term deferred tax assets |  | $ 244 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent | $ 73 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent |  |  |  | $ 244 us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Net long-term deferred tax liability |  | 106 us-gaap_DeferredTaxLiabilitiesNoncurrent | 397 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |  |  | 106 us-gaap_DeferredTaxLiabilitiesNoncurrent
Net long-term deferred tax other assets |  | 9 us-gaap_DeferredTaxAssetsOther |  |  |  |  | 9 us-gaap_DeferredTaxAssetsOther
Period of cumulative loss position |  | 3 years | 3 years |  |  |  |
Tax benefit from release of valuation allowance | 517 mas_IncomeTaxExpenseBenefitFromReleaseOfValuationAllowance |  |  |  |  |  |
Number of consecutive quarters of pre-tax earnings |  | 24 months |  |  |  |  |
Deferred tax assets, with no valuation allowance |  | 669 us-gaap_DeferredTaxAssetsNet | 175 us-gaap_DeferredTaxAssetsNet |  |  |  | 669 us-gaap_DeferredTaxAssetsNet
Deferred tax asset related to net operating loss and tax credit carryforwards |  | 238 mas_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards | 355 mas_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditCarryforwards |  |  |  |
Deferred tax assets related to net operating loss and tax credit carryforwards expiring between 2020 and 2032 for 2012 and between 2020 and 2033 for 2013 |  | 233 mas_DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwardsWithLimitedExpirationPeriod | 345 mas_DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwardsWithLimitedExpirationPeriod |  |  |  |
Deferred tax assets related to net operating loss and tax credit carryforwards with unlimited expiration period |  | 5 mas_DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwardsWithUnlimitedExpirationPeriod | 10 mas_DeferredTaxAssetsNetOperatingLossAndTaxCreditCarryforwardsWithUnlimitedExpirationPeriod |  |  |  |
Deferred tax asset not recognized, share based compensation |  | 53 mas_DeferredTaxAssetNotRecognizedShareBasedCompensation |  |  |  |  | 53 mas_DeferredTaxAssetNotRecognizedShareBasedCompensation
Deferred tax liabilities on the undistributed earnings of certain foreign subsidiaries |  | 12 us-gaap_UndistributedEarningsOfForeignSubsidiaries |  |  |  |  | 12 us-gaap_UndistributedEarningsOfForeignSubsidiaries
Income taxes paid |  | 80 us-gaap_IncomeTaxesPaid | 77 us-gaap_IncomeTaxesPaid | 57 us-gaap_IncomeTaxesPaid |  |  |
Federal |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |
Increase in valuation allowance |  |  |  | 65 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember | 372 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember | 87 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember |
Federal | Forecast |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |
Reversal of valuation allowance |  | 27 mas_ReversalOfValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  |  |  |  |
State |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |
Tax benefit, reversal of accrual for uncertain tax positions, expiration of statutes of limitations and settlements on audits |  | 8 mas_TaxBenefitReversalOfAccrualForUncertainTaxPositionsExpirationsAndSettlements / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 8 mas_TaxBenefitReversalOfAccrualForUncertainTaxPositionsExpirationsAndSettlements / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 14 mas_TaxBenefitReversalOfAccrualForUncertainTaxPositionsExpirationsAndSettlements / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |  |  |
Non-cash charge to deferred income tax expense due to change in deferred tax assets valuation allowance |  | (35)mas_DeferredIncomeTaxExpenseFromChangeInValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 13 mas_DeferredIncomeTaxExpenseFromChangeInValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember | 26 mas_DeferredIncomeTaxExpenseFromChangeInValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |  |  |
Foreign |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |
Increase in valuation allowance |  | (6)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember |  |  |  |  | (6)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember
UK and Mexican tax authority |  |  |  |  |  |  |
Income taxes |  |  |  |  |  |  |
Increase in valuation allowance |  |  |  |  |  |  | $ 12 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_IncomeTaxAuthorityAxis = mas_UkAndMexicanTaxAuthorityMember

X
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations from release of valuation allowance. + References No definition available. + Details
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- Definition Represents the number of consecutive quarters of pre-tax earnings used to support the realization of deferred tax assets. + References No definition available. + Details
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31917-109318 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e31931-109318 + Details
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- Definition The amount of the change in the period in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32123-109318 + Details
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