DEBT - Short-Term Debt (Details) - USD ($)	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Short-term Debt [Line Items]
Short-term debt	$ 0	$ 0
Weighted-average interest rate	0.00%	0.00%
Short-term Lines of Credit
Short-term Debt [Line Items]
Borrowing capacity	$ 88,500,000	$ 87,800,000
Short-term debt	0	0
Letter of credit
Short-term Debt [Line Items]
Undrawn letters of credit	15,000,000.0	6,000,000.0
Bank Guarantee
Short-term Debt [Line Items]
Undrawn letters of credit	$ 31,200,000	$ 45,700,000
Minimum \| Short-term Lines of Credit
Short-term Debt [Line Items]
Interest rate spread	0.40%	0.80%
Maximum \| Short-term Lines of Credit
Short-term Debt [Line Items]
Interest rate spread	2.20%	7.30%

The effective interest rate during the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
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Balance Type:	credit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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