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Depreciation and Amortization Expense - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Property Plant And Equipment Useful Life And Values [Abstract] |  |
Depreciation and amortization expense | $ 94 | $ 104
Accelerated depreciation | $ 9 | $ 9

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- Definition Accelerated depreciation for the period. + References No definition available. + Details
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Namespace Prefix: | mas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | mas_PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract
Namespace Prefix: | mas_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration