CONDENSED CONSOLIDATED BALANCE SHEET (DETAIL) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 51		$ 57		$ 51	$ 55
Receivables, less allowances	904		683
Due from affiliates	0		0
Inventories	823		810
Assets held for sale – current	16		29
Other current assets	223		269
Total current assets	2,017		1,848
Investment in subsidiaries	0		0
Due from affiliates	0		0
Property, plant and equipment, net	2,892		2,932
Goodwill	1,168		1,166
Intangible assets	1,025		1,040
Deferred income taxes	372		436
Other non-current assets	221		225
TOTAL ASSETS	7,695		7,647
CURRENT LIABILITIES
Accounts payable and accrued liabilities	933		988
Due to affiliates	0		0
Short-term debt	22		1
Long-term debt – current portion	4		3
Total current liabilities	959		992
Long-term debt, net of current portion	2,171		2,024
Due to affiliates	0		0
Pension plan liability	285		336
Other employee benefits liability	230		242
Deferred income taxes	20		23
Other liabilities	133		200
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0	[1]	0	[1]
Common stock	1	[2]	1	[2]
Additional paid in capital	3,947		3,938
Accumulated earnings	791		655
Accumulated other comprehensive deficit	(356)		(297)		(382)	(364)
Cost of common stock in treasury	(524)	[3]	(504)	[3]
Total Owens Corning stockholders’ equity	3,859		3,793
Noncontrolling interests	38		37
Total equity	3,897		3,830
TOTAL LIABILITIES AND EQUITY	7,695		7,647
Parent Company
CURRENT ASSETS
Cash and cash equivalents	0		0		1	0
Receivables, less allowances	0		0
Due from affiliates	0		0
Inventories	0		0
Assets held for sale – current	0		0
Other current assets	(2)		45
Total current assets	(2)		45
Investment in subsidiaries	7,546		7,229
Due from affiliates	0		0
Property, plant and equipment, net	359		362
Goodwill	0		0
Intangible assets	0		0
Deferred income taxes	13		14
Other non-current assets	25		31
TOTAL ASSETS	7,941		7,681
CURRENT LIABILITIES
Accounts payable and accrued liabilities	71		15
Due to affiliates	1,789		1,688
Short-term debt	0		0
Long-term debt – current portion	0		0
Total current liabilities	1,860		1,703
Long-term debt, net of current portion	1,912		1,814
Due to affiliates	0		0
Pension plan liability	179		213
Other employee benefits liability	0		0
Deferred income taxes	0		0
Other liabilities	131		158
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	1		1
Additional paid in capital	3,947		3,938
Accumulated earnings	791		655
Accumulated other comprehensive deficit	(356)		(297)
Cost of common stock in treasury	(524)		(504)
Total Owens Corning stockholders’ equity	3,859		3,793
Noncontrolling interests	0		0
Total equity	3,859		3,793
TOTAL LIABILITIES AND EQUITY	7,941		7,681
Guarantor Subsidiaries
CURRENT ASSETS
Cash and cash equivalents	6		3		4	3
Receivables, less allowances	0		0
Due from affiliates	2,776		2,664
Inventories	508		487
Assets held for sale – current	0		0
Other current assets	135		140
Total current assets	3,425		3,294
Investment in subsidiaries	2,594		2,558
Due from affiliates	62		67
Property, plant and equipment, net	1,335		1,313
Goodwill	1,127		1,127
Intangible assets	995		1,015
Deferred income taxes	319		416
Other non-current assets	61		64
TOTAL ASSETS	9,918		9,854
CURRENT LIABILITIES
Accounts payable and accrued liabilities	500		608
Due to affiliates	0		0
Short-term debt	0		0
Long-term debt – current portion	2		2
Total current liabilities	502		610
Long-term debt, net of current portion	27		26
Due to affiliates	894		959
Pension plan liability	0		0
Other employee benefits liability	215		226
Deferred income taxes	0		0
Other liabilities	176		246
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	6,607		6,572
Accumulated earnings	1,497		1,215
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	8,104		7,787
Noncontrolling interests	0		0
Total equity	8,104		7,787
TOTAL LIABILITIES AND EQUITY	9,918		9,854
Non Guarantor Subsidiaries
CURRENT ASSETS
Cash and cash equivalents	45		54		46	52
Receivables, less allowances	904		683
Due from affiliates	0		0
Inventories	315		323
Assets held for sale – current	16		29
Other current assets	90		84
Total current assets	1,370		1,173
Investment in subsidiaries	558		558
Due from affiliates	894		959
Property, plant and equipment, net	1,198		1,257
Goodwill	41		39
Intangible assets	248		271
Deferred income taxes	40		6
Other non-current assets	135		130
TOTAL ASSETS	4,484		4,393
CURRENT LIABILITIES
Accounts payable and accrued liabilities	362		365
Due to affiliates	987		976
Short-term debt	22		1
Long-term debt – current portion	2		1
Total current liabilities	1,373		1,343
Long-term debt, net of current portion	232		184
Due to affiliates	62		67
Pension plan liability	106		123
Other employee benefits liability	15		16
Deferred income taxes	20		23
Other liabilities	44		42
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	1,996		2,045
Accumulated earnings	598		513
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	2,594		2,558
Noncontrolling interests	38		37
Total equity	2,632		2,595
TOTAL LIABILITIES AND EQUITY	4,484		4,393
Consolidation Eliminations
CURRENT ASSETS
Cash and cash equivalents	0		0		0	0
Receivables, less allowances	0		0
Due from affiliates	(2,776)		(2,664)
Inventories	0		0
Assets held for sale – current	0		0
Other current assets	0		0
Total current assets	(2,776)		(2,664)
Investment in subsidiaries	(10,698)		(10,345)
Due from affiliates	(956)		(1,026)
Property, plant and equipment, net	0		0
Goodwill	0		0
Intangible assets	(218)		(246)
Deferred income taxes	0		0
Other non-current assets	0		0
TOTAL ASSETS	(14,648)		(14,281)
CURRENT LIABILITIES
Accounts payable and accrued liabilities	0		0
Due to affiliates	(2,776)		(2,664)
Short-term debt	0		0
Long-term debt – current portion	0		0
Total current liabilities	(2,776)		(2,664)
Long-term debt, net of current portion	0		0
Due to affiliates	(956)		(1,026)
Pension plan liability	0		0
Other employee benefits liability	0		0
Deferred income taxes	0		0
Other liabilities	(218)		(246)
OWENS CORNING STOCKHOLDERS' EQUITY
Preferred stock	0		0
Common stock	0		0
Additional paid in capital	(8,603)		(8,617)
Accumulated earnings	(2,095)		(1,728)
Accumulated other comprehensive deficit	0		0
Cost of common stock in treasury	0		0
Total Owens Corning stockholders’ equity	(10,698)		(10,345)
Noncontrolling interests	0		0
Total equity	(10,698)		(10,345)
TOTAL LIABILITIES AND EQUITY	$ (14,648)		$ (14,281)

[1] 10 shares authorized; none issued or outstanding at September 30, 2014, and December 31, 2013

[2] 400 shares authorized; 135.5 issued and 117.6 outstanding at September 30, 2014; 135.5 issued and 117.8 outstanding at December 31, 2013

[3] 17.9 shares at September 30, 2014, and 17.7 shares at December 31, 2013