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Employee Benefit Plans (Narrative) (Details) - shares shares in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract] |  |  |  |
Shares repurchased | 1.4 | 4.6 | 3.6 | 8.6

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- Definition Stock Repurchased During Period in Treasury, Shares + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration