Cover Page	3 Months Ended
	Mar. 31, 2022 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-5794
Entity Registrant Name	Masco Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-1794485
Entity Address, Address Line One	17450 College Parkway,
Entity Address, City or Town	Livonia,
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48152
City Area Code	313
Local Phone Number	274-7400
Title of 12(b) Security	Common Stock, $1.00 par value
Trading Symbol	MAS
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)	235,940,440
Entity Central Index Key	0000062996
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false