RETIREMENT PENSION PLANS (Details 7) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Settlement loss	$ 59	$ 0	$ 109
Total Pension Plans
Service cost	2	2	3
Interest cost	70	80	83
Assumed rate of return on plan assets	(111)	(104)	(112)
Amortization of - Actuarial losses	26	23	26
Curtailment gain	0	0	(1)
Settlement loss	59	0	111
Retiree medical expense - total company	$ 46	$ 1	$ 110