STOCK PROGRAMS - Summary of status of share units (Details) - Share Units - Non-employee	12 Months Ended
	Jun. 30, 2020 $ / shares shares
Shares
Outstanding at the beginning of the period (in shares) | shares	131,200
Granted (in shares) | shares	4,600
Dividend equivalents (in shares) | shares	1,000.0
Outstanding at the end of the period (in shares) | shares	136,800
Weighted-Average Grant Date Fair Value Per Share
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 57.22
Weighted-average grant date fair value (in dollars per share) | $ / shares	190.99
Dividend equivalents (in dollars per share) | $ / shares	177.86
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 62.46