Document and Entity Information	3 Months Ended
	Mar. 31, 2016 shares
Document and Entity Information [Abstract]
Entity Registrant Name	MASCO CORP /DE/
Entity Central Index Key	0000062996
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)	332,746,136
Entity Current Reporting Status	Yes