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NOTES PAYABLE AND COMMERCIAL BANK FINANCINGS (Details) - USD ($)
$ in Millions
Apr. 30, 2015
Sep. 30, 2015
Notes Payable And Commercial Bank Financing    
Long-term debt outstanding   $ 3,891.0
Medium-term Notes [Member] | Term Loan A    
Notes Payable And Commercial Bank Financing    
Long-term debt outstanding   321.1
Deferred finance costs and debt discounts   1.7
Medium-term Notes [Member] | Term Loan B    
Notes Payable And Commercial Bank Financing    
Long-term debt outstanding   1,367.4
Deferred finance costs and debt discounts   15.8
Bank Credit Agreement | Term Loan B    
Notes Payable And Commercial Bank Financing    
Additional debt commitment $ 350.0  
Financing costs   3.6
Bank Credit Agreement | Term Loan B | LIBOR    
Notes Payable And Commercial Bank Financing    
Interest rate margin (as a percent) 2.75%  
LIBOR floor (as a percent) 0.75%  
Bank Credit Agreement | Revolving credit facility    
Notes Payable And Commercial Bank Financing    
Current borrowing capacity   $ 482.9