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Stock-Based Compensation (Details Textual) - USD ($) $ in Millions | 9 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | 0 |
Stock-Based Compensation (Textual) [Abstract] |  |
Cash received from the exercise of capital stock option | $ 21.7 | $ 7.2
Stock-Based Compensation (Additional Textual) [Abstract] |  |
Maximum period of achievement of performance goals to earn performance units | 3 years |
Minimum performance period of individual required to earn performance units | 3 years |
Stock Option [Member] |  |
Stock-Based Compensation (Textual) [Abstract] |  |
Compensation expense related to stock option | $ 0.6 | 1.3
Unrecognized compensation cost | $ 0.2 |
Unrecognized compensation costs, weighted average period | 5 months 20 days |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $ 1.9 | 3.3
Tax benefits resulting from stock-based compensation deductions (less than) in excess of amounts reported for financial reporting purposes | 0.1 | 0.0
Tax benefit from the exercise of capital stock option | 1.4 | 0.0
Total Intrinsic value of options exercised | 6.4 | 1.6
Restricted Stock Units (RSUs) [Member] |  |
Stock-Based Compensation (Textual) [Abstract] |  |
Compensation expense related to stock option | 15.0 | $ 15.8
Unrecognized compensation cost | $ 18.1 |
Unrecognized compensation costs, weighted average period | 2 years |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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