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SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 6,700,000	$ 18,800,000	$ 27,300,000	$ 32,800,000
Forfeitures of share-based compensation instruments	0.0	3,100,000	3,100,000	5,600,000
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	11,000,000.0		$ 11,000,000.0
Weighted-average period for unrecognized share-based compensation			2 years 9 months 7 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	2,400,000		$ 2,400,000
Weighted-average period for unrecognized share-based compensation			2 years 2 months 4 days
Restricted Stock Units and Other Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	4,500,000	2,900,000	$ 21,600,000	13,300,000
Total unrecognized share-based compensation expense	$ 55,300,000		$ 55,300,000
Weighted-average period for unrecognized share-based compensation			2 years 6 months 21 days
Awards granted (in shares)	0		8,700,000
Restricted Stock and Other Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 200,000	0.0	$ 700,000	0.0
Awards granted (in shares)	0		0
Non-Qualified Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 1,600,000	500,000	$ 4,200,000	3,100,000
Options granted (in shares)	0		0
Series A Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized share-based compensation expense	$ 0.0		$ 0.0
Weighted-average period for unrecognized share-based compensation			0 years
Awards granted (in shares)	0		0
Series A-1 Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	0		0
Series A and A-1 Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 400,000	15,400,000	$ 800,000	16,400,000
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 6,700,000	$ 21,900,000	$ 30,400,000	$ 38,400,000