Depreciation and Amortization	6 Months Ended
Jun. 30, 2017
Depreciation, Depletion and Amortization [Abstract]
Depreciation and Amortization	DEPRECIATION AND AMORTIZATION Depreciation and amortization expense was $64 million and $66 million for the six-month periods ended June 30, 2017 and 2016, respectively.

The entire disclosure for depreciation and amortization expense.

No definition available.

Name:	mas_DepreciationAndAmortizationExpenseDisclosureTextBlock
Namespace Prefix:	mas_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration