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SEGMENT INFORMATION - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Segment Reporting Information [Line Items]        
Concentration Risk, Benchmark Description less than 5% less than 5% less than 5% less than 5%
Regulatory Settlement Charge   $ 52.2   $ 52.2
Sales Revenue, Net [Member]        
Segment Reporting Information [Line Items]        
Concentration Risk, Percentage 10.00% 10.00% 10.00% 10.00%