XML 134 R88.htm IDEA: XBRL DOCUMENT v2.4.1.9
EMPLOYEE RETIREMENT PLANS (Details 7) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Post-retirement benefit plans    
Employee Retirement Plans    
Aggregate present value of unfunded accumulated post-retirement benefit obligation $ 12us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
$ 10us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Qualified    
Employee Retirement Plans    
Contribution to qualified defined-benefit pension plans 40us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mas_UnitedStatesQualifiedPensionPlansOfUSEntityDefinedBenefitMember
 
Payments to participants of unfunded defined-benefit pension plans 47us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mas_UnitedStatesQualifiedPensionPlansOfUSEntityDefinedBenefitMember
 
Foreign defined-benefit pension plans    
Employee Retirement Plans    
Payments to participants of unfunded defined-benefit pension plans 7us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_ForeignPensionPlansDefinedBenefitMember
 
Non-Qualified    
Employee Retirement Plans    
Payments to participants of unfunded defined-benefit pension plans $ 12us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= mas_UnitedStatesNonQualifiedPensionPlansOfUSEntityDefinedBenefitMember