RETIREMENT MEDICAL PLANS (Details Textuals) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Sep. 26, 2014
Health care cost trend rate (weighted average)				7.00%
Reduction in retiree medical expense from subsidy						$ (9,000,000)
Reduction in APBO from subsidy	$ 25,000,000					35,000,000
Net actuarial loss estimated to be amortized from accumulated other comprehensive loss				$ 14,000,000
The prior service benefit estimated to be amortized from accumulated other comprehensive loss to periodic benefits cost				1,000,000
U.S. Retiree Medical Plan
Liability for retroactive benefits		$ 2,000,000	$ 2,000,000	2,000,000	$ 2,000,000
Decrease in benefit obligations		$ 18,000,000
Curtailment gain			$ 16,000,000	0	16,000,000
Amortization, average service life			8 years
Decrease in retiree medical expense			$ 15,000,000	$ 0	$ 15,000,000	$ 0
Health care cost trend rate (weighted average)				7.00%	7.40%	7.00%
Average remaining service period of active participants	11 years			10 years
U.S. Retiree Medical Plan | Minimum
Face amount of employee life insurance coverage per employee							$ 3,750
U.S. Retiree Medical Plan | Maximum
Face amount of employee life insurance coverage per employee							$ 15,000