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Description of Business and Basis of Presentation - Recent Accounting Pronouncements (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Dec. 31, 2016 | Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Employee services share-based compensation, tax benefit realized | $ 0.1 | $ 5.8

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- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
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