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EMPLOYEE BENEFIT PLANS - Plan Assets and Investment Policy (Details)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Plan Assets and Investment Policy
Expected Rate of Return (as a percent)	4.20%	4.20%
Combined
Plan Assets and Investment Policy
Proportion of Fair Value (as a percent)	100.00%	100.00%
Expected Rate of Return (as a percent)	4.20%	4.20%
Equity securities
Plan Assets and Investment Policy
Proportion of Fair Value (as a percent)	83.00%	80.00%
Expected Rate of Return (as a percent)	4.90%	5.00%
Debt securities
Plan Assets and Investment Policy
Proportion of Fair Value (as a percent)	16.00%	19.00%
Expected Rate of Return (as a percent)	0.80%	1.00%
Cash
Plan Assets and Investment Policy
Proportion of Fair Value (as a percent)	1.00%	1.00%
Expected Rate of Return (as a percent)	0.40%	0.50%

X

- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2919-114920

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- Definition

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+ References

No definition available.

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- Definition

Percentage of investment to total investment within defined benefit plan asset category.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

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