RECEIVABLES (Details) - Credit Risk Profile by Internally Assigned Grade (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2014 Contracts [Member]	Sep. 30, 2013 Contracts [Member]	Mar. 31, 2014 Notes [Member]	Sep. 30, 2013 Notes [Member]	Dec. 31, 2013 Alabama Notes Receivable [Member]
Low	$ 157.9	$ 126.1	$ 157.9	$ 126.1	$ 0	$ 0
Medium	94.3	100.3	94.3	100.2	0	0.1
High	212.2	247.0	136.7	156.9	75.5	90.1
Total recorded investment	464.4	473.4	388.9	383.2	75.5	90.2
Impaired Financing Receivable, Recorded Investment	$ 92.9	$ 80.7					$ 75.0