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Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 9 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Class of Stock [Line Items] |  |
Payments for Repurchase of Common Stock | $ 350 | $ 600
Treasury Shares |  |
Class of Stock [Line Items] |  |
Treasury Stock, Shares, Acquired | (7.3) | (12.0)
Payments for Repurchase of Common Stock | $ 350 | $ 600
Treasury shares acquired, average price per share (in usd per share) | $ 48.00 | $ 52.32
Treasury Stock Acquired Shares |  | 11.5

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