| 
         Equity and Long-Term Incentive Compensation Plans Cash-Based Long-Term Incentive Compensation (Details) (Cash Long-Term Incentive Plan, USD $) In Millions, unless otherwise specified | 12 Months Ended | |
|---|---|---|
| 
         Jun. 30, 2014 
         Installment | 
         Jun. 30, 2013 | |
| 
         Cash Long-Term Incentive Plan | ||
| Cash Long-Term Incentive Plan | ||
| Cash-based long-term incentive plan, granted amount | $ 67.7 | |
| Cash long-term incentive plan, equal vesting installments | 4 | |
| Cash long-term incentive plan, percentage of equal vesting installments | 25.00% | |
| Cash long-term incentive plan, vesting period | 4 years | |
| Cash long-term incentive program, compensation expense | 26.2 | 11.0 | 
| Cash long-term incentive plan, unrecognized compensation balance | $ 87.1 | |
| X | ||||||||||
| 
          - Definition
           Cash Long-term Incentive Plan, Equal Vesting Installments No definition available. 
 | 
| X | ||||||||||
| 
          - Definition
           Deferred Compensation Arrangement with Individual, Percentage Of Equal Vesting Installments No definition available. 
 | 
| X | ||||||||||
| 
          - Definition
           Deferred Compensation Arrangement With Individual, Unrecognized Compensation Liability No definition available. 
 | 
| X | ||||||||||
| 
          - Definition
           Deferred Compensation Arrangement with Individual, Vesting Period No definition available. 
 | 
| X | ||||||||||
| 
          - Definition
           Long-Term Incentive Plan, Granted Amount No definition available. 
 | 
| X | ||||||||||
| 
          - Definition
           The compensation expense recognized during the period pertaining to the deferred compensation arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
| 
          - Details
           
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