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Employee Benefits Plans Employee Stock Purchase Plan (Details) - Employee Stock Purchase Plan [Member] - $ / shares shares in Thousands | 12 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00% |  |
Shares issued for Employee Stock Purchase Plan (shares) | 76 | 81 | 87
Employee stock purchase plan, average price per share | $ 98.46 | $ 77.52 | $ 65.33
Common Stock, Capital Shares Reserved for Future Issuance | 1,381 |  |

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