CONTINGENCIES (Details) $ in Millions	12 Months Ended
	Sep. 30, 2015 USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]
Environmental Contingencies, beginning balance	$ 19
Payments	(6)
Accruals	3
Environmental Contingencies, ending balance	16
Superfund Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Environmental Contingencies, beginning balance	2
Payments	0
Accruals	0
Environmental Contingencies, ending balance	2
Non-Superfund Sites
Accrual for Environmental Loss Contingencies [Roll Forward]
Environmental Contingencies, beginning balance	17
Payments	(6)
Accruals	3
Environmental Contingencies, ending balance	$ 14