DEBT (Senior Notes Narrative) (Details) (Senior Notes [Member], USD $)	0 Months Ended
	Jun. 21, 2013 issuance	Sep. 30, 2014	Sep. 30, 2013	Jun. 21, 2013	Jan. 31, 2012
6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount		$ 650,000,000		$ 650,000,000	$ 450,000,000
Number of debt issuances combined into single series	2
Stated interest rate		6.50%	6.50%		6.50%
Add-on 6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal amount	200,000,000			200,000,000
Debt premium	$ 8,500,000			$ 8,500,000