Quarterly report pursuant to Section 13 or 15(d)

Equity and Long-Term Incentive Compensation Plans - Restricted Stock Units (Details)

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Equity and Long-Term Incentive Compensation Plans - Restricted Stock Units (Details) - Restricted stock units - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted-average grant date fair value per unit (in dollars per share) $ 105.15 $ 75.38 $ 91.39 $ 70.95
Grant date fair value of vested restricted stock units $ 5,322 $ 1,843 $ 41,856 $ 31,051
Tax benefits (expense) realized by the Company in connection with vested and released restricted stock units $ (1,930) $ 765 $ 16,482 $ 14,694