BUSINESS COMBINATIONS - Acquisition-related Costs (Details) $ in Millions  | 
12 Months Ended | 
|---|---|
| 
 Jun. 30, 2019  
USD ($) 
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| Business Combination and Asset Acquisition [Abstract] | |
| Acquisition-related costs | $ 40.2 | 
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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