Annual report pursuant to Section 13 and 15(d)

Equity and Long-Term Incentive Compensation Plans - Cash-Based Long-Term Incentive Compensation (Details)

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Equity and Long-Term Incentive Compensation Plans - Cash-Based Long-Term Incentive Compensation (Details) - Cash Long-Term Incentive Plan
$ in Millions
12 Months Ended
Jun. 30, 2015
USD ($)
Installment
Jun. 30, 2014
USD ($)
Cash Long-Term Incentive Plan    
Cash-based long-term incentive plan, granted amount $ 67.7  
Cash long-term incentive plan, equal vesting installments | Installment 4  
Cash long-term incentive plan, percentage of equal vesting installments 25.00%  
Cash long-term incentive plan, vesting period (in years) 4 years  
Executive deferred compensation program, compensation expense $ 39.6 $ 26.2
Cash long-term incentive plan, unrecognized compensation balance $ 94.5