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Earnings Per Shares (Details) - shares
shares in Millions
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Earnings Per Share (Textual) [Abstract]      
Increase in weighted average shares due to dilutive effect of unexercised capital stock options and unvested restricted stock units 1.3 0.8 1.2
Unexercised capital stock options and restricted stock units excluded from computation of diluted EPS 0.2 1.7 0.5