Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements of Income [Abstract]
Net sales	$ 2,022	$ 2,048	$ 3,794	$ 3,900
Cost of sales	1,490	1,502	2,837	2,862
Gross profit	532	546	957	1,038
Selling, general and administrative expenses	441	427	845	841
Operating profit	91	119	112	197
Other income (expense), net:
Interest expense	(64)	(67)	(127)	(125)
Impairment charge for financial investments	0	(33)	0	(33)
Other, net	31	(3)	52	(1)
Total other income (expense), net	(33)	(103)	(75)	(159)
Income before income taxes	58	16	37	38
Income tax expense	38	4	51	22
Net income (loss)	20	12	(14)	16
Less: Net income attributable to noncontrolling interest	(12)	(9)	(24)	(20)
Net income (loss) attributable to Masco Corporation	8	3	(38)	(4)
Basic:
Net income (loss)	$ 0.02	$ 0.01	$ (0.11)	$ (0.02)
Diluted:
Net income ( loss)	$ 0.02	$ 0.01	$ (0.11)	$ (0.02)
Amounts attributable to Masco Corporation:
Net income (loss)	$ 8	$ 3	$ (38)	$ (4)