RESTRUCTURING COSTS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended						12 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Sep. 30, 2013		Sep. 30, 2012
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start			$ 12			$ 15	$ 12	$ 15		$ 19
Charges to continuing operations	7	2	1	12	11	3	10	23		39
Charges to discontinued operations, net of reversals							0	3	[1]	1	[1]
Asset write-offs								(1)		(19)
Cash payments – continuing operations							(10)	(23)		(22)
Cash payments – discontinued operations								(3)	[1]	(3)
Other							(1)	(2)
Restructuring reserve, period end	11						11	12		15
Less: non-current restructuring reserves	(2)						(2)	(3)
Restructuring reserves – current	9						9	9
Employee Termination Benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start			12			15	12	15		19
Charges to continuing operations							10	18		18
Charges to discontinued operations, net of reversals								3	[1]	0	[1]
Asset write-offs								0		0
Cash payments – continuing operations							(10)	(19)		(20)
Cash payments – discontinued operations								(3)	[1]	(2)
Other							(1)	(2)
Restructuring reserve, period end	11						11	12		15
Less: non-current restructuring reserves	(2)						(2)
Restructuring reserves – current	9						9
Asset Impairment [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start			0			0	0	0		0
Charges to continuing operations							0	1		19
Charges to discontinued operations, net of reversals								0	[1]	0	[1]
Asset write-offs								(1)		(19)
Cash payments – continuing operations							0	0		0
Cash payments – discontinued operations								0	[1]	0
Other							0	0
Restructuring reserve, period end	0						0	0		0
Less: non-current restructuring reserves	0						0
Restructuring reserves – current	0						0
Plant Shutdown & Other [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, period start			0			0	0	0		0
Charges to continuing operations							0	4		2
Charges to discontinued operations, net of reversals								0	[1]	1	[1]
Asset write-offs								0		0
Cash payments – continuing operations							0	(4)		(2)
Cash payments – discontinued operations								0	[1]	(1)
Other							0	0
Restructuring reserve, period end	0						0	0		0
Less: non-current restructuring reserves	0						0
Restructuring reserves – current	$ 0						$ 0

[1] Charges to discontinued operations are included in discontinued operations in the consolidated statement of operations. Amounts for prior periods have been recast for discontinued operations.