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Earnings Per Shares (Details)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Earnings Per Share (Textual) [Abstract]        
Increase in weighted average shares due to dilutive effect of unexercised capital stock options and unvested restricted stock units   1.0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements   1.0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Unexercised capital stock options and restricted stock units excluded from computation of diluted EPS 1.7us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0.2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 1.3us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0.3us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount