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Employee Benefit Plans (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Nov. 30, 2015
$ / shares
shares
Jun. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
$ / shares
shares
Performance Shares [Member] | November 2015 Grant [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
RSUs granted in the period | shares 330,000    
Fair value of equity awards on the date of grant (in US$ per unit) | $ / shares $ 30.81    
Compensation expense | $   $ 1.3 $ 3.6
Restricted Stock Units (RSUs) [Member] | Fiscal 2016 Grant [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
RSUs granted in the period | shares     2,100,000
Stock Option Grant Recipients   570 570
Fair value of equity awards on the date of grant (in US$ per unit) | $ / shares     $ 23.14
Compensation expense | $   $ 2.4 $ 6.3
Minimum [Member] | Performance Shares [Member] | November 2015 Grant [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of total units granted that vest in the period 0.00%    
Maximum [Member] | Performance Shares [Member] | November 2015 Grant [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of total units granted that vest in the period 200.00%