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Severance Costs | 3 Months Ended
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Mar. 31, 2016
Restructuring Charges [Abstract] |
Severance Costs | SEVERANCE COSTS We recorded charges related to severance of $2 million and $6 million for the three months ended March 31, 2016 and 2015, respectively. Such charges are principally reflected in the condensed consolidated statements of operations in selling, general and administrative expenses.

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- Definition The entire disclosure for charges related to severance and early retirement programs. + References No definition available. + Details
Name: | mas_SeveranceCostsDisclosureTextBlock
Namespace Prefix: | mas_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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