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