Long-term Debt (Details) (USD $)	9 Months Ended
Mar. 31, 2015	Jun. 30, 2014
Debt Instrument [Line Items]
Total long-term debt	$ 825,625,000us-gaap_LongTermDebt	$ 715,000,000us-gaap_LongTermDebt
Current portion of long-term debt	(62,500,000)us-gaap_LongTermDebtCurrent	(87,500,000)us-gaap_LongTermDebtCurrent
Long-term debt	763,125,000us-gaap_LongTermDebtNoncurrent	627,500,000us-gaap_LongTermDebtNoncurrent
Subordinated note receivable, interest rate	3.25%
Line of Credit [Member] \| Asset Backed Bank Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	80,000,000	70,000,000
Line of credit facility, maximum borrowing capacity	100,000,000
Accounts receivable outstanding under the revolving agreement	163,100,000
Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	105,000,000	20,000,000
Line of credit facility, maximum borrowing capacity	200,000,000
Term Loan Facility [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	240,625,000	250,000,000
Line of credit facility, maximum borrowing capacity	250,000,000
Senior Notes [Member] \| Senior Notes Due 2014 [Member]
Debt Instrument [Line Items]
Total long-term debt	0	25,000,000
Debt instrument, stated interest rate	7.19%
Senior Notes [Member] \| Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Total long-term debt	0	50,000,000
Debt instrument, stated interest rate	2.62%
Senior Notes [Member] \| Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Total long-term debt	50,000,000	50,000,000
Debt instrument, stated interest rate	3.04%
Senior Notes [Member] \| Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Total long-term debt	50,000,000	50,000,000
Debt instrument, stated interest rate	3.04%
Senior Notes [Member] \| Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Total long-term debt	50,000,000	50,000,000
Debt instrument, stated interest rate	3.04%
Senior Notes [Member] \| Senior Notes Due 2022 [Member]
Debt Instrument [Line Items]
Total long-term debt	100,000,000	0
Senior Notes [Member] \| Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 150,000,000	$ 150,000,000

Accounts receivable, net of reserves, outstanding under revolving agreement at period end.

No definition available.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Name Accounting Standards Codification

-Topic 210

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Yield on the receivable, on which interest has been imputed, as calculated from its issuance value or purchase price. The calculated effective interest rate considers factors such as the issued face value or price paid for the receivable, the time period between payments, and the time until maturity [full receipt] of the receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

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