COST REDUCTION ACTIONS (DETAIL) (Cost Reduction Actions 2012 [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 0	$ 36
Other costs related to restructuring	22	73
Restructuring and Related Cost, Incurred Cost	22	109
Composites [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	0	34
Accelerated Depreciation	14	48
Other costs related to restructuring	8	22
Restructuring and Related Cost, Incurred Cost	22	104
Restructuring And Related Cost Expected Cost		25
Building Materials [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs		2
Other costs related to restructuring		3
Restructuring and Related Cost, Incurred Cost		5
Employee Severance Member | Composites [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring And Related Cost Expected Cost		6
Restructuring Reserve Roll Forward
Restructuring Reserve, Beginning Balance		0
Restructuring Reserve Period Expense		36
Restructuring Reserve Settled With Cash		(2)
Restructuring Reserve, Ending Balance	34	34
Restructuring And Related Cost Cost Incurred To Date		$ 36