XML 60 R12.htm IDEA: XBRL DOCUMENT v2.4.0.6

Depreciation and Amortization Expense	3 Months Ended
	Mar. 31, 2013
Property Plant And Equipment [Abstract]
Depreciation and Amortization Expense	D. Depreciation and amortization expense, including discontinued operations, was $49 million and $55 million, including accelerated depreciation, relating to business rationalization initiatives, of $4 million and $7 million, for the three months ended March 31, 2013 and 2012, respectively.

X

- Definition

Depreciation And Amortization Expense Disclosure [Text Block]

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration