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SEGMENT INFORMATION (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales | $ 2,064 us-gaap_SalesRevenueNet | $ 2,232 us-gaap_SalesRevenueNet | $ 2,260 us-gaap_SalesRevenueNet | $ 1,965 us-gaap_SalesRevenueNet | $ 1,998 us-gaap_SalesRevenueNet | $ 2,150 us-gaap_SalesRevenueNet | $ 2,149 us-gaap_SalesRevenueNet | $ 1,876 us-gaap_SalesRevenueNet | $ 8,521 us-gaap_SalesRevenueNet | $ 8,173 us-gaap_SalesRevenueNet | $ 7,495 us-gaap_SalesRevenueNet
Income (Charge) for litigation settlements, net |  |  |  |  |  |  |  |  | 9 us-gaap_GainLossRelatedToLitigationSettlement |  | (77)us-gaap_GainLossRelatedToLitigationSettlement
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 788 us-gaap_OperatingIncomeLoss | 673 us-gaap_OperatingIncomeLoss | 302 us-gaap_OperatingIncomeLoss
Other income (expense), net |  |  |  |  |  |  |  |  | (213)us-gaap_NonoperatingIncomeExpense | (223)us-gaap_NonoperatingIncomeExpense | (229)us-gaap_NonoperatingIncomeExpense
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  | 575 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 450 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 73 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Assets held for sale |  |  |  |  |  |  |  |  |  |  | 203 us-gaap_AssetsHeldForSaleAtCarryingValue
Assets | 7,167 us-gaap_Assets |  |  |  | 6,957 us-gaap_Assets |  |  |  | 7,167 us-gaap_Assets | 6,957 us-gaap_Assets | 6,883 us-gaap_Assets
Property Additions |  |  |  |  |  |  |  |  | 128 us-gaap_PropertyPlantAndEquipmentAdditions | 124 us-gaap_PropertyPlantAndEquipmentAdditions | 117 us-gaap_PropertyPlantAndEquipmentAdditions
Depreciation and Amortization |  |  |  |  |  |  |  |  | 167 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations | 184 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations | 203 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations
North America |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 6,892 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 6,634 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 6,046 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
International, principally Europe |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 1,629 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | 1,539 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | 1,449 us-gaap_SalesRevenueNet / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember
Cabinets and Related Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 999 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 1,014 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 939 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember
Plumbing Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 3,308 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 3,183 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 2,955 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember
Installation and Other Services |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 1,515 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 1,412 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 1,209 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember
Decorative Architectural Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 1,998 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 1,927 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 1,818 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember
Other Specialty Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 701 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 637 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 574 us-gaap_SalesRevenueNet / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 915 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 807 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 497 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Assets | 5,630 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember |  |  |  | 5,669 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember |  |  |  | 5,630 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 5,669 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 5,659 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Property Additions |  |  |  |  |  |  |  |  | 127 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 120 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 115 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 156 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 173 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 192 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating Segments | Cabinets and Related Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | (62)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | (10)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | (89)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember
Assets | 608 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember |  |  |  | 659 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember |  |  |  | 608 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 659 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 700 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember
Property Additions |  |  |  |  |  |  |  |  | 9 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 9 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 15 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 33 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 42 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember | 57 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_CabinetsAndRelatedProductsMember
Operating Segments | Plumbing Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 512 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 394 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 307 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember
Assets | 1,989 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember |  |  |  | 2,040 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember |  |  |  | 1,989 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 2,040 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 2,012 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember
Property Additions |  |  |  |  |  |  |  |  | 65 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 71 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 67 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 63 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 65 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember | 69 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_PlumbingProductsMember
Operating Segments | Installation and Other Services |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 58 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 37 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | (19)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember
Assets | 1,474 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember |  |  |  | 1,465 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember |  |  |  | 1,474 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 1,465 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 1,444 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember
Property Additions |  |  |  |  |  |  |  |  | 13 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 14 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 11 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 26 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 27 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember | 30 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_InstallationAndOtherServicesMember
Operating Segments | Decorative Architectural Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 360 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 351 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 329 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember
Assets | 857 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember |  |  |  | 812 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember |  |  |  | 857 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 812 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 799 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember
Property Additions |  |  |  |  |  |  |  |  | 12 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 16 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 11 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 16 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 17 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember | 15 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_DecorativeArchitecturalProductsMember
Operating Segments | Other Specialty Products |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 47 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 35 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | (31)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember
Assets | 702 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember |  |  |  | 693 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember |  |  |  | 702 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 693 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 704 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember
Property Additions |  |  |  |  |  |  |  |  | 28 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 10 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 11 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 18 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 22 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember | 21 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = mas_OtherSpecialtyProductsMember
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
General corporate expense, net |  |  |  |  |  |  |  |  | (136)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | (134)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | (126)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Assets | 1,537 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember |  |  |  | 1,288 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember |  |  |  | 1,537 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 1,288 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 1,021 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Property Additions |  |  |  |  |  |  |  |  | 1 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 4 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 2 us-gaap_PropertyPlantAndEquipmentAdditions / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Depreciation and Amortization |  |  |  |  |  |  |  |  | 11 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 11 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 11 mas_DepreciationDepletionAndAmortizationExcludingDiscontinuedOperations / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Segment Reconciling Items |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Income (Charge) for litigation settlements, net |  |  |  |  |  |  |  |  | 9 us-gaap_GainLossRelatedToLitigationSettlement / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember |  | (77)us-gaap_GainLossRelatedToLitigationSettlement / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Gain from sales of fixed assets |  |  |  |  |  |  |  |  |  |  | 8 us-gaap_GainLossOnSaleOfPropertyPlantEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember
Geographic Areas |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 915 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember | 807 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember | 497 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember
Assets | 5,630 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember |  |  |  | 5,669 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember |  |  |  | 5,630 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember | 5,669 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember | 5,659 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember
Geographic Areas | North America |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 701 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 649 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 360 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
Assets | 4,335 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  |  |  | 4,295 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  |  |  | 4,335 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 4,295 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember | 4,363 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
Geographic Areas | International, principally Europe |  |  |  |  |  |  |  |  |  |  |
Segment Information |  |  |  |  |  |  |  |  |  |  |
Operating Profit (Loss) |  |  |  |  |  |  |  |  | 214 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | 158 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | 137 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember
Assets | $ 1,295 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember |  |  |  | $ 1,374 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember |  |  |  | $ 1,295 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | $ 1,374 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember | $ 1,296 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ReportableGeographicalComponentsMember / us-gaap_StatementGeographicalAxis = mas_ForeignLocationsMember

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