Annual report pursuant to Section 13 and 15(d)

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting for Non-qualified Deferred Compensation Plan (Details)

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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting for Non-qualified Deferred Compensation Plan (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]      
Non-qualified deferred compensation plan payout period 15 years    
Selling, general and administrative      
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]      
Executive deferred compensation program, compensation expense (benefit) $ 56.5 $ 13.3 $ 13.6
Gain (loss), net on deferred compensation plan assets $ 56.8 $ 13.9 $ 14.7