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SEVERANCE COSTS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Restructuring Charges [Abstract] |  |  |
Severance and early retirement program costs | $ 8 | $ 12 | $ 27

X
- Definition Represents one-time severance and early retirement costs that are not part of a restructuring plan nor associated with a discontinued operation. + References No definition available. + Details
Name: | mas_SeveranceAndRetirementCosts
Namespace Prefix: | mas_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RestructuringChargesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration