Quarterly report pursuant to Section 13 or 15(d)

Equity and Long-Term Incentive Compensation Plans - Employee Stock Purchase Plan (Details)

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Equity and Long-Term Incentive Compensation Plans - Employee Stock Purchase Plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
ESPP maximum employee subscription rate 10.00%  
Employee stock purchase plan offering period 6 months  
Share-based compensation arrangement, discount from market price, lesser of commencement of offering period or purchase date 85.00%  
Share-based Compensation Arrangement, Fair Value Assumptions and Methodology [Abstract]    
Expected stock price volatility 23.90% 23.50%
Risk-free interest rate 0.10% 0.10%
Dividend yield 3.70% 2.70%
Expected life (in years) 6 months 6 months
Employee Stock Purchase Plan Additional Information [Abstract]    
Tax benefits realized by the Company in connection with the disqualifying dispositions of shares purchased under the ESPP $ 380 $ 1,083
Weighted-average fair value per share based on Black-Scholes model $ 11.34 $ 14.66
ESPP maximum annual share replenishment 2,000,000  
Number of ESPP shares available for future issuance 2,100,000