| 
         Long-Term Debt (Details) (USD $) | 1 Months Ended | 12 Months Ended | |
|---|---|---|---|
| 
         Apr. 30, 2008 | 
         Jun. 30, 2014 | 
         Jun. 30, 2013 | |
| Long-term Debt, Other Disclosures [Abstract] | |||
| Principal amount | $ 750,000,000 | ||
| Stated interest rate | 6.90% | ||
| Effective interest rate | 7.00% | ||
| 债券折价 | 5400000年 | ||
| Debt Instrument, Frequency of Periodic Payment | semi-annually | ||
| Offer to repurchase senior note, percent of principal amount | 101.00% | ||
| Fair value | $ 893,700,000 | $ 872,300,000 | 
| X | ||||||||||
| 
          - Definition
           The price as a percent of the principal amount the company is obligated to repurchase in the event of a change of control followed by a downgrade of the rating of the Company's senior notes. No definition available. 
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| X | ||||||||||
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          - Definition
           Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Definition
           Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Definition
           Description of the frequency of periodic payments (monthly, quarterly, annual). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Definition
           Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Definition
           Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Definition
           The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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          - Details
           
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