SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, SALES TAX ACCOUNTING (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2011
Accounting Policies [Abstract]
Sales tax	$ 44.4		$ 32.3		$ 50.7
TEFA	5.0	[1]	6.0	[1]	9.0	[1]
Total	$ 49.4		$ 38.3		$ 59.7

[1] TEFA will be phased out over a three-year period commencing January 1, 2012.