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RELINQUISHMENT AGREEMENT (Tables)
6 Months Ended
Mar. 31, 2015
RELINQUISHMENT AGREEMENT [Abstract]  
Relinquishment payments
Relinquishment payments consisted of the following (in millions):
 
For the Six Months Ended
 
March 31, 2015
 
March 31, 2014
Principal
$
24.4

 
$
23.5

Accretion of discount
0.8

 
1.8

Total
$
25.2

 
$
25.3