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FAIR VALUE MEASUREMENTS (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
10-Year Treasury Yield Curve Rate [Member]
Dec. 31, 2013
10-Year Credit Default Swap Rate [Member]
Dec. 31, 2013
1-Year Credit Default Swap Rate [Member]
Dec. 31, 2013
1-Year Treasury Yield Curve Rate [Member]
Dec. 31, 2013
2-Year Treasury Yield Curve Rate [Member]
Dec. 31, 2013
2-Year Credit Default Swap Rate [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2013
Low [Member]
Dec. 31, 2013
Medium [Member]
Dec. 31, 2013
High - Lower Range [Member]
Dec. 31, 2013
High - Upper Range [Member]
Dec. 31, 2013
Average
Dec. 31, 2013
Acquisition Contingent Consideration Payable [Member]
Dec. 31, 2013
Other Current Liabilities [Member]
Sep. 30, 2013
Other Current Liabilities [Member]
Dec. 31, 2013
Other Noncurrent Liabilities [Member]
Sep. 30, 2013
Other Noncurrent Liabilities [Member]
Internal Earnings Projection Probability                 10.00% 90.00%                    
Fair Value Inputs, Discount Rate 18.00%                                      
Business Combination, Contingent Consideration, Liability (in Dollars)                                 $ 60.0 $ 57.6 $ 50.9 $ 48.8
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability (in Dollars) $ 4.5 $ 2.1                           $ 4.5        
Fair Value Inputs, Entity Credit Risk 11.25%                   7.50% 8.00% 9.50% 11.25%            
Jackpot Liabilities Expected Payment Term                 1 year 25 years         10 years          
Fair Value Assumptions, Risk Free Interest Rate (in hundredths)     3.00% 1.65% 0.22% 0.11% 0.39% 0.34%