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SHARE-BASED COMPENSATION PLANS (Tables)
 9 Months Ended
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-based compensation expense
Share-based compensation expense is recognized on a straight-line basis over the requisite service period. Total share-based compensation is shown in the table below:
 
Three Months Ended
March 31,
 
Nine Months Ended
March 31,
 
2019
 
2018
 
2019
 
2018
Equity plan expense
$
(0.5
)
 
$
8.7

 
$
10.3

 
$
25.8

Liability plan (income) expense
—

 
1.2

 
(2.6
)
 
0.3

Fringe expense
—

 
1.1

 
0.5

 
2.9

Total share-based compensation expense
$
(0.5
)
 
$
11.0

 
$
8.2

 
$
29.0