LONG-TERM DEBT (Term Loan) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Feb. 13, 2014 Term Loan [Member]	Apr. 23, 2012 Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 100
Repurchased amount of debt				41
Repayments of debt	439	475	86
Repurchase of convertible notes	$ 31	$ 24	$ 0	$ 2