SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, SALES TAX (Details) (USD $) In Millions	12 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2009
Accounting Policies [Abstract]
Sales Tax	$ 50.7		$ 41.6		$ 58.7
TEFA	9.0	[1]	8.3	[1]	8.9	[1]
Total	$ 59.7		$ 49.9		$ 67.6

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